XML 102 R86.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Share-based Compensation and Employee Benefits Pensions and Other Postretirement Benefit Plans (Details) - USD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Expected Amortization, Next Fiscal Year |  |  |  | $ 34 |  |
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year |  |  |  | (36) |  |
Defined Benefit Plan, Expected Amortization of Prior Service Cost (Credit), Next Fiscal Year |  |  |  | $ (2) |  |
Pension Plan [Member] |  |  |  |  |  |
Pension Plans [Abstract] |  |  |  |  |  |
defined benefit plan covered employee percentage |  |  |  | 100.00% |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | $ 39 | $ 10 | $ (35) |  |  |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Benefit Obligation, beginning of period | 2,884 | 2,654 |  |  |  |
Defined Benefit Plan, Service Cost | 40 | 36 | 33 |  |  |
Defined Benefit Plan, Interest Cost | 88 | 89 | 99 |  |  |
Defined Benefit Plan, Actuarial (Gain) Loss | 155 | 127 |  |  |  |
Defined Benefit Plan, Benefits Paid | (180) | (180) |  |  |  |
Defined Benefit Plan, Contributions by Plan Participants | 3 | 3 |  |  |  |
Defined Benefit Plan, Medicare Part D Subsidy Receipts | 0 | 0 |  |  |  |
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) | 13 | 4 |  |  |  |
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment | 21 | 0 |  |  |  |
Defined Benefit Plan, Benefit Obligation, end of period | 2,982 | 2,884 | 2,654 |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 2,160 | 2,050 |  |  |  |
Defined Benefit Plan, Actual (Loss) Return on Plan Assets | 292 | 157 |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer | 32 | 8 |  |  |  |
Defined Benefit Plan, Contributions by Plan Participants | 3 | 3 |  |  |  |
Defined Benefit Plan, Medicare Part D Subsidy Receipts | 0 | 0 |  |  |  |
Defined Benefit Plan, Benefits Paid | (180) | (180) |  |  |  |
Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss) | 10 | 3 |  |  |  |
Defined Benefit Plan, Plan Assets, Payment for Settlement | (21) | 0 |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 2,296 | 2,160 | 2,050 |  |  |
Defined Benefit Plan, Funded (Unfunded) Status of Plan |  |  |  | $ (686) | $ (724) |
Components of Funded Status [Abstract] |  |  |  |  |  |
Assets for Plan Benefits, Defined Benefit Plan |  |  |  | 0 | 0 |
Liability, Defined Benefit Plan, Current |  |  |  | 0 | 0 |
Liability, Defined Benefit Plan, Noncurrent |  |  |  | (686) | (724) |
Defined Benefit Plan, Funded (Unfunded) Status of Plan |  |  |  | (686) | (724) |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax |  |  |  | (635) | (682) |
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax |  |  |  | (4) | (5) |
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax |  |  |  | (639) | (687) |
Defined Benefit Plan, Accumulated Benefit Obligation |  |  |  | 2,840 | 2,834 |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 2,160 | 2,050 | $ 2,050 | 2,296 | 2,160 | $ 2,050
Investments Net Asset Value |  |  |  | 1,281 | $ 1,128 |
Changes in Pension and OPEB Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Level 3 Reconciliation, Actual Return (Loss) | $ 292 | $ 157 |  |  |  |
Expected Payment of Future Benefits and Employer Contributions [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Expected Future Benefit Payments, 2018 |  |  |  | 244 |  |
Defined Benefit Plan, Expected Future Benefit Payments, 2019 |  |  |  | 241 |  |
Defined Benefit Plan, Expected Future Benefit Payments, 2020 |  |  |  | 242 |  |
Defined Benefit Plan, Expected Future Benefit Payments, 2021 |  |  |  | 232 |  |
Defined Benefit Plan, Expected Future Benefit Payments, 2022 |  |  |  | 230 |  |
Defined Benefit Plan, Expected Future Benefit Payments, 2023-2027 |  |  |  | $ 1,029 |  |
Actuarial Assumptions and Sensitivity Analysis [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate |  |  |  | 3.56% | 3.83% | 4.05%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase |  |  |  | 3.53% | 3.52% | 3.50%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets | 7.07% | 7.31% | 7.50% |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase | 3.52% | 3.51% | 4.50% |  |  |
Components of Net Benefit Cost and Other Amounts Recognized in Other Comprehensive Income [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Service Cost | $ 40 | $ 36 | $ 33 |  |  |
Defined Benefit Plan, Interest Cost | 88 | 89 | 99 |  |  |
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (147) | (151) | (172) |  |  |
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | 1 | 1 | 0 |  |  |
Defined Benefit Plan, Amortization of Net Actuarial Loss (Gain) | 52 | 35 | 5 |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment | (5) | 0 | 0 |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 39 | 10 | (35) |  |  |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax | 17 | 116 | 267 |  |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax | 0 | 0 | 0 |  |  |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax | (64) | (34) | (5) |  |  |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax | (1) | 0 | 0 |  |  |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax | 0 | 1 | 0 |  |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax | (48) | 83 | 262 |  |  |
Total Net benefit cost and other comprehensive income (loss) recognized | (9) | 93 | 227 |  |  |
Pension Plan [Member] | Common collective trusts [Member] |  |  |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Investments Net Asset Value |  |  |  | $ 895 | $ 829 |
Pension Plan [Member] | Private Investment Funds [Member] |  |  |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Investments Net Asset Value |  |  |  | 337 | 290 |
Pension Plan [Member] | Limited Partnership [Member] |  |  |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Investments Net Asset Value |  |  |  | 49 | 9 |
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 490 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 529 | 490 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 490 | 490 |  | 529 | 490 |
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Cash [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 10 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 6 | 10 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 10 | 10 |  | 6 | 10 |
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Mutual funds investment type [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 197 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 245 | 197 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 197 | 197 |  | 245 | 197 |
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 283 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 278 | 283 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 283 | 283 |  | 278 | 283 |
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Fixed Income Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Guaranteed Investment Contract [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Derivatives [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Class P | Equity Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 126 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 110 | 126 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 126 | 126 |  | 110 | 126 |
Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 526 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 486 | 526 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 526 | 526 |  | 486 | 526 |
Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Cash [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Short-term Investments [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 100 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 65 | 100 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 100 | 100 |  | 65 | 100 |
Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Mutual funds investment type [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Fixed Income Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 428 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 416 | 428 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 428 | 428 |  | 416 | 428 |
Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Guaranteed Investment Contract [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Derivatives [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | (2) |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 5 | (2) |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | (2) | (2) |  | 5 | (2) |
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 16 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 16 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 16 | 16 |  | 0 | 16 |
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Cash [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Short-term Investments [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Mutual funds investment type [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Fixed Income Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Guaranteed Investment Contract [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 16 | 15 |  |  |  |
Defined Benefit Plan, Actual (Loss) Return on Plan Assets | 0 | 1 |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 16 | 15 |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 16 | 15 | $ 15 | 0 | 16 | $ 15
Changes in Pension and OPEB Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Assets Transferred into (out of) Level 3 | 0 | 0 |  |  |  |
Defined Benefit Plan, Plan Assets, Level 3 Reconciliation, Actual Return (Loss) | 0 | 1 |  |  |  |
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Purchases, Sales, and Settlements | (16) | 0 |  |  |  |
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Derivatives [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | $ 0 | $ 0 |  | $ 0 | $ 0 |
Pension Plan [Member] | Benefit obligation [Member] |  |  |  |  |  |
Actuarial Assumptions and Sensitivity Analysis [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate | 3.83% | 4.05% | 3.66% |  |  |
Pension Plan [Member] | Discount rate for interest on benefit obligations [Member] |  |  |  |  |  |
Actuarial Assumptions and Sensitivity Analysis [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate | 3.09% | 3.24% | 3.66% |  |  |
Pension Plan [Member] | Discount rate for service cost [Member] |  |  |  |  |  |
Actuarial Assumptions and Sensitivity Analysis [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate | 3.88% | 4.15% | 3.66% |  |  |
Pension Plan [Member] | Discount rate for interest on service cost [Member] |  |  |  |  |  |
Actuarial Assumptions and Sensitivity Analysis [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate | 3.24% | 3.50% | 3.66% |  |  |
Pension Plan [Member] | Equity Securities [Member] | Common collective trusts [Member] |  |  |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 64.00% | 61.00% |
Pension Plan [Member] | Equity Securities [Member] | Private Investment Funds [Member] |  |  |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 48.00% | 46.00% |
Pension Plan [Member] | Fixed Income Securities [Member] | Common collective trusts [Member] |  |  |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 36.00% | 39.00% |
Pension Plan [Member] | Fixed Income Securities [Member] | Private Investment Funds [Member] |  |  |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 52.00% | 54.00% |
Pension Plan [Member] | Domestic Plan [Member] |  |  |  |  |  |
Pension Plans [Abstract] |  |  |  |  |  |
Defined Benefit Plan,Vesting Period | 3 years |  |  |  |  |
Expected Payment of Future Benefits and Employer Contributions [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Expected Future Benefit Payments, Next Fiscal Year |  |  |  | $ 30 |  |
Pension Plan [Member] | Domestic Plan [Member] | Minimum [Member] | Cash [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 0.00% |  |
Pension Plan [Member] | Domestic Plan [Member] | Minimum [Member] | Equity Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 34.00% |  |
Pension Plan [Member] | Domestic Plan [Member] | Minimum [Member] | Fixed Income Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 37.00% |  |
Pension Plan [Member] | Domestic Plan [Member] | Minimum [Member] | Alternative Investments [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 0.00% |  |
Pension Plan [Member] | Domestic Plan [Member] | Maximum [Member] | Cash [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 5.00% |  |
Pension Plan [Member] | Domestic Plan [Member] | Maximum [Member] | Equity Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 59.00% |  |
Pension Plan [Member] | Domestic Plan [Member] | Maximum [Member] | Fixed Income Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 57.00% |  |
Pension Plan [Member] | Domestic Plan [Member] | Maximum [Member] | Alternative Investments [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 2.00% |  |
Pension Plan [Member] | Foreign Plan [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Other Change | $ 0 | $ 151 |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Other | 0 | 119 |  |  |  |
Expected Payment of Future Benefits and Employer Contributions [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Expected Future Benefit Payments, Next Fiscal Year |  |  |  | $ 10 |  |
Pension Plan [Member] | Foreign Plan [Member] | Equity Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 55.00% |  |
Pension Plan [Member] | Foreign Plan [Member] | Fixed Income Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 45.00% |  |
Other Pension, Postretirement and Supplemental Plans [Member] | Foreign Plan [Member] |  |  |  |  |  |
Pension Plans [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) |  |  | $ 12 |  |  |
Components of Net Benefit Cost and Other Amounts Recognized in Other Comprehensive Income [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) |  |  | 12 |  |  |
Other Postretirement Benefits Plan [Member] |  |  |  |  |  |
Pension Plans [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | (14) | (5) | (4) |  |  |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Benefit Obligation, beginning of period | 473 | 509 |  |  |  |
Defined Benefit Plan, Service Cost | 1 | 1 | 0 |  |  |
Defined Benefit Plan, Interest Cost | 13 | 16 | 21 |  |  |
Defined Benefit Plan, Actuarial (Gain) Loss | (16) | (42) |  |  |  |
Defined Benefit Plan, Benefits Paid | (38) | (41) |  |  |  |
Defined Benefit Plan, Contributions by Plan Participants | 2 | 2 |  |  |  |
Defined Benefit Plan, Medicare Part D Subsidy Receipts | 1 | 1 |  |  |  |
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) | 1 | 1 |  |  |  |
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment | 0 | 0 |  |  |  |
Defined Benefit Plan, Benefit Obligation, end of period | 425 | 473 | 509 |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 332 | 325 |  |  |  |
Defined Benefit Plan, Actual (Loss) Return on Plan Assets | 29 | 29 |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer | 9 | 16 |  |  |  |
Defined Benefit Plan, Contributions by Plan Participants | 2 | 2 |  |  |  |
Defined Benefit Plan, Medicare Part D Subsidy Receipts | 1 | 1 |  |  |  |
Defined Benefit Plan, Benefits Paid | (38) | (41) |  |  |  |
Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss) | 0 | 0 |  |  |  |
Defined Benefit Plan, Plan Assets, Payment for Settlement | 0 | 0 |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 335 | 332 | 325 |  |  |
Defined Benefit Plan, Funded (Unfunded) Status of Plan |  |  |  | $ (90) | $ (141) |
Components of Funded Status [Abstract] |  |  |  |  |  |
Assets for Plan Benefits, Defined Benefit Plan |  |  |  | 198 | 153 |
Liability, Defined Benefit Plan, Current |  |  |  | (15) | (16) |
Liability, Defined Benefit Plan, Noncurrent |  |  |  | (273) | (278) |
Defined Benefit Plan, Funded (Unfunded) Status of Plan |  |  |  | (90) | (141) |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax |  |  |  | 88 | 69 |
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax |  |  |  | 17 | 18 |
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax |  |  |  | 105 | 87 |
Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation |  |  |  | 373 | 415 |
Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Fair Value of Plan Assets |  |  |  | 84 | 121 |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 332 | 325 | $ 325 | 335 | 332 | $ 325
Investments Net Asset Value |  |  |  | 212 | $ 201 |
Changes in Pension and OPEB Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Level 3 Reconciliation, Actual Return (Loss) | $ 29 | $ 29 |  |  |  |
Expected Payment of Future Benefits and Employer Contributions [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Expected Future Benefit Payments, 2018 |  |  |  | 36 |  |
Defined Benefit Plan, Expected Future Benefit Payments, 2019 |  |  |  | 36 |  |
Defined Benefit Plan, Expected Future Benefit Payments, 2020 |  |  |  | 35 |  |
Defined Benefit Plan, Expected Future Benefit Payments, 2021 |  |  |  | 34 |  |
Defined Benefit Plan, Expected Future Benefit Payments, 2022 |  |  |  | 33 |  |
Defined Benefit Plan, Expected Future Benefit Payments, 2023-2027 |  |  |  | $ 149 |  |
Actuarial Assumptions and Sensitivity Analysis [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate |  |  |  | 3.48% | 3.69% | 3.91%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets | 6.84% | 7.07% | 7.08% |  |  |
Unrelated Business Income Tax Rate | 21.00% | 21.00% | 21.00% |  |  |
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year |  |  |  | 7.71% |  |
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate |  |  |  | 4.54% |  |
Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components | $ 1 | $ 1 |  |  |  |
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation | 22 | 27 |  |  |  |
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components | (1) | (1) |  |  |  |
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation | (19) | (23) |  |  |  |
Components of Net Benefit Cost and Other Amounts Recognized in Other Comprehensive Income [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Service Cost | 1 | 1 | $ 0 |  |  |
Defined Benefit Plan, Interest Cost | 13 | 16 | 21 |  |  |
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (19) | (19) | (23) |  |  |
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | (3) | (3) | (3) |  |  |
Defined Benefit Plan, Amortization of Net Actuarial Loss (Gain) | (6) | 0 | 1 |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment | 0 | 0 | 0 |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | (14) | (5) | (4) |  |  |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax | (25) | (48) | (49) |  |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), before Tax | 0 | 0 | 0 |  |  |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax | 6 | 0 | (1) |  |  |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax | 1 | 1 | 1 |  |  |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax | 0 | 0 | 0 |  |  |
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax | (18) | (47) | (49) |  |  |
Total Net benefit cost and other comprehensive income (loss) recognized | (32) | (52) | (53) |  |  |
Other Postretirement Benefits Plan [Member] | Common collective trusts [Member] |  |  |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Investments Net Asset Value |  |  |  | $ 68 | $ 68 |
Other Postretirement Benefits Plan [Member] | Fixed Income Trusts [Member] |  |  |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Investments Net Asset Value |  |  |  | 66 | 64 |
Other Postretirement Benefits Plan [Member] | Limited Partnership [Member] |  |  |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Investments Net Asset Value |  |  |  | 78 | 69 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 69 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 67 | 69 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 69 | 69 |  | 67 | 69 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Mutual funds investment type [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 1 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 1 | 1 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 1 | 1 |  | 1 | 1 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 11 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 16 | 11 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 11 | 11 |  | 16 | 11 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Master Limited Partnerships [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 57 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 50 | 57 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 57 | 57 |  | 50 | 57 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Guaranteed Investment Contract [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 15 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 7 | 15 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 15 | 15 |  | 7 | 15 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Short-term Investments [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 15 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 7 | 15 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 15 | 15 |  | 7 | 15 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Mutual funds investment type [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Master Limited Partnerships [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Guaranteed Investment Contract [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 47 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 49 | 47 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 47 | 47 |  | 49 | 47 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Short-term Investments [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Mutual funds investment type [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Master Limited Partnerships [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 0 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 0 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 |  | 0 | 0 |
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Guaranteed Investment Contract [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 47 | 49 |  |  |  |
Defined Benefit Plan, Actual (Loss) Return on Plan Assets | 5 | (2) |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 49 | 47 | 49 |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 47 | 49 | $ 49 | 49 | 47 | $ 49
Changes in Pension and OPEB Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Assets Transferred into (out of) Level 3 | 0 | 0 |  |  |  |
Defined Benefit Plan, Plan Assets, Level 3 Reconciliation, Actual Return (Loss) | 5 | (2) |  |  |  |
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Purchases, Sales, and Settlements | (3) | $ 0 |  |  |  |
Other Postretirement Benefits Plan [Member] | Each of Next Five Years [Member] |  |  |  |  |  |
Expected Payment of Future Benefits and Employer Contributions [Abstract] |  |  |  |  |  |
Medicare prescription drug, improvement and modernization act, annual subsidy | 2 |  |  |  |  |
Other Postretirement Benefits Plan [Member] | Five Fiscal Years Thereafter [Member] |  |  |  |  |  |
Expected Payment of Future Benefits and Employer Contributions [Abstract] |  |  |  |  |  |
Medicare prescription drug, improvement and modernization act, annual subsidy | $ 13 |  |  |  |  |
Other Postretirement Benefits Plan [Member] | Benefit obligation [Member] |  |  |  |  |  |
Actuarial Assumptions and Sensitivity Analysis [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate | 3.69% | 3.91% | 3.56% |  |  |
Other Postretirement Benefits Plan [Member] | Discount rate for interest on benefit obligations [Member] |  |  |  |  |  |
Actuarial Assumptions and Sensitivity Analysis [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate | 3.05% | 3.18% | 3.56% |  |  |
Other Postretirement Benefits Plan [Member] | Discount rate for service cost [Member] |  |  |  |  |  |
Actuarial Assumptions and Sensitivity Analysis [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate | 4.15% | 4.36% | 3.56% |  |  |
Other Postretirement Benefits Plan [Member] | Discount rate for interest on service cost [Member] |  |  |  |  |  |
Actuarial Assumptions and Sensitivity Analysis [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate | 3.95% | 4.17% | 3.56% |  |  |
Other Postretirement Benefits Plan [Member] | Other Affiliates [Member] |  |  |  |  |  |
Pension Plans [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | $ (4) | $ (4) |  |  |  |
Components of Funded Status [Abstract] |  |  |  |  |  |
Assets for Plan Benefits, Defined Benefit Plan |  |  |  | $ 33 | $ 29 |
Components of Net Benefit Cost and Other Amounts Recognized in Other Comprehensive Income [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | (4) | (4) |  |  |  |
Other Postretirement Benefits Plan [Member] | Equity Securities [Member] | Common collective trusts [Member] |  |  |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 71.00% | 72.00% |
Other Postretirement Benefits Plan [Member] | Fixed Income Securities [Member] | Common collective trusts [Member] |  |  |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 29.00% | 28.00% |
Other Postretirement Benefits Plan [Member] | Domestic Plan [Member] |  |  |  |  |  |
Other Postretirement Benefit Plans [Abstract] |  |  |  |  |  |
Purchase of Medical Coverage through Medicare Exchange Participant, Age |  |  |  | 65 |  |
Expected Payment of Future Benefits and Employer Contributions [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Expected Future Benefit Payments, Next Fiscal Year |  |  |  | $ 7 |  |
Other Postretirement Benefits Plan [Member] | Domestic Plan [Member] | Minimum [Member] | Cash [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 0.00% |  |
Other Postretirement Benefits Plan [Member] | Domestic Plan [Member] | Minimum [Member] | Equity Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 15.00% |  |
Other Postretirement Benefits Plan [Member] | Domestic Plan [Member] | Minimum [Member] | Master Limited Partnerships [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 13.00% |  |
Other Postretirement Benefits Plan [Member] | Domestic Plan [Member] | Minimum [Member] | Fixed Income Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 15.00% |  |
Other Postretirement Benefits Plan [Member] | Domestic Plan [Member] | Maximum [Member] | Cash [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 20.00% |  |
Other Postretirement Benefits Plan [Member] | Domestic Plan [Member] | Maximum [Member] | Equity Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 55.00% |  |
Other Postretirement Benefits Plan [Member] | Domestic Plan [Member] | Maximum [Member] | Master Limited Partnerships [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 39.00% |  |
Other Postretirement Benefits Plan [Member] | Domestic Plan [Member] | Maximum [Member] | Fixed Income Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 47.00% |  |
Other Postretirement Benefits Plan [Member] | Foreign Plan [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Other Change | (12) | 26 |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Other | $ 0 | 0 |  |  |  |
Expected Payment of Future Benefits and Employer Contributions [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Expected Future Benefit Payments, Next Fiscal Year |  |  |  | $ 1 |  |
Closed to New Participants [Member] | Pension Plan [Member] | Foreign Plan [Member] | Equity Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 10.00% |  |
Closed to New Participants [Member] | Pension Plan [Member] | Foreign Plan [Member] | Fixed Income Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 90.00% |  |
Savings plan - defined contribution plan [Member] |  |  |  |  |  |
Savings Plan [Abstract] |  |  |  |  |  |
Defined Contribution Plan, Cost |  |  | $ 46 |  |  |
Savings plan - defined contribution plan [Member] |  |  |  |  |  |
Savings Plan [Abstract] |  |  |  |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent | 5.00% |  |  |  |  |
Defined Contribution Plan, Cost | $ 47 | 47 |  |  |  |
Kinder Morgan, Inc. | Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 1 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year |  | 1 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 1 | 1 |  |  | $ 1 |
Kinder Morgan, Inc. | Pension Plan [Member] | Domestic Plan [Member] | Minimum [Member] | Company Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 0.00% |  |
Kinder Morgan, Inc. | Pension Plan [Member] | Domestic Plan [Member] | Maximum [Member] | Company Securities [Member] |  |  |  |  |  |
Components of Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  |  | 10.00% |  |
Kinder Morgan, Inc. | Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Class P | Equity Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 2 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 2 | 2 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 2 | 2 |  | $ 2 | 2 |
Within Fair Value Hierarchy [Member] | Pension Plan [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 1,032 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 1,015 | 1,032 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 1,032 | 1,032 |  | 1,015 | 1,032 |
Within Fair Value Hierarchy [Member] | Pension Plan [Member] | Cash [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 10 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 6 | 10 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 10 | 10 |  | 6 | 10 |
Within Fair Value Hierarchy [Member] | Pension Plan [Member] | Short-term Investments [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 100 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 65 | 100 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 100 | 100 |  | 65 | 100 |
Within Fair Value Hierarchy [Member] | Pension Plan [Member] | Mutual funds investment type [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 197 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 245 | 197 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 197 | 197 |  | 245 | 197 |
Within Fair Value Hierarchy [Member] | Pension Plan [Member] | Equity Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 283 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 278 | 283 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 283 | 283 |  | 278 | 283 |
Within Fair Value Hierarchy [Member] | Pension Plan [Member] | Fixed Income Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 428 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 416 | 428 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 428 | 428 |  | 416 | 428 |
Within Fair Value Hierarchy [Member] | Pension Plan [Member] | Guaranteed Investment Contract [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 16 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 0 | 16 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 16 | 16 |  | 0 | 16 |
Within Fair Value Hierarchy [Member] | Pension Plan [Member] | Derivatives [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | (2) |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 5 | (2) |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | (2) | (2) |  | 5 | (2) |
Within Fair Value Hierarchy [Member] | Other Postretirement Benefits Plan [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 131 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 123 | 131 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 131 | 131 |  | 123 | 131 |
Within Fair Value Hierarchy [Member] | Other Postretirement Benefits Plan [Member] | Short-term Investments [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 15 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 7 | 15 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 15 | 15 |  | 7 | 15 |
Within Fair Value Hierarchy [Member] | Other Postretirement Benefits Plan [Member] | Mutual funds investment type [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 1 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 1 | 1 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 1 | 1 |  | 1 | 1 |
Within Fair Value Hierarchy [Member] | Other Postretirement Benefits Plan [Member] | Equity Securities [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 11 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 16 | 11 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 11 | 11 |  | 16 | 11 |
Within Fair Value Hierarchy [Member] | Other Postretirement Benefits Plan [Member] | Master Limited Partnerships [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 57 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 50 | 57 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 57 | 57 |  | 50 | 57 |
Within Fair Value Hierarchy [Member] | Other Postretirement Benefits Plan [Member] | Guaranteed Investment Contract [Member] |  |  |  |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, beginning of year | 47 |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets, end of year | 49 | 47 |  |  |  |
Plan Assets [Abstract] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | $ 47 | $ 47 |  | $ 49 | $ 47 |

X
- Definition Changes in Pension and OPEB Assets [Abstract] + References No definition available. + Details
Name: | kmi_ChangesinPensionandOPEBAssetsAbstract
Namespace Prefix: | kmi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Components of Funded Status [Abstract] + References No definition available. + Details
Name: | kmi_ComponentsofFundedStatusAbstract
Namespace Prefix: | kmi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Components of Net Benefit Cost and Other Amounts Recognized in Other Comprehensive Income [Abstract] + References No definition available. + Details
Name: | kmi_ComponentsofNetBenefitCostandOtherAmountsRecognizedinOtherComprehensiveIncomeAbstract
Namespace Prefix: | kmi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Defined Benefit Plan,Vesting Period + References No definition available. + Details
Name: | kmi_DefinedBenefitPlanVestingPeriod
Namespace Prefix: | kmi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition defined benefit plan covered employee percentage + References No definition available. + Details
Name: | kmi_Definedbenefitplancoveredemployeepercentage
Namespace Prefix: | kmi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Medicare prescription drug, improvement and modernization act, annual subsidy + References No definition available. + Details
Name: | kmi_MedicarePrescriptionDrugImprovementAndModernizationActAnnualSubsidy
Namespace Prefix: | kmi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Other Postretirement Benefit Plans [Abstract] + References No definition available. + Details
Name: | kmi_OtherPostretirementBenefitPlansAbstract
Namespace Prefix: | kmi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Pension Plans [Abstract] + References No definition available. + Details
Name: | kmi_PensionPlansAbstract
Namespace Prefix: | kmi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Purchase of Medical Coverage through Medicare Exchange Participant, Age + References No definition available. + Details
Name: | kmi_PurchaseofMedicalCoveragethroughMedicareExchangeParticipantAge
Namespace Prefix: | kmi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Savings Plan [Abstract] + References No definition available. + Details
Name: | kmi_SavingsPlanAbstract
Namespace Prefix: | kmi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Unrelated Business Income Tax Rate + References No definition available. + Details
Name: | kmi_UnrelatedBusinessIncomeTaxRate
Namespace Prefix: | kmi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount recognized in net periodic benefit cost (credit) and other comprehensive (income) loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=77993564&loc=d3e4179-114921 + Details
Name: | us-gaap_AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i-k) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 + Details
Name: | us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
Name: | us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanActuarialGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(4) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(5) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1731-114919 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(10)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase (decrease) in plan assets of defined benefit plan from assets transferred into (from) plan. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(6) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of contributions received by defined benefit plan from participant which increase benefit obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, before benefit payment, of receipt from prescription drug subsidy which increases benefit obligation of defined benefit postretirement plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 + Details
Name: | us-gaap_DefinedBenefitPlanBenefitObligationPrescriptionDrugSubsidyReceipt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of contribution received by defined benefit plan from employer which increases plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(ii) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2709-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(iv)(01) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanContributionsByEmployer
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of (increase) decrease in benefit obligation of defined benefit plan from event reducing expected years of future service of present employees or eliminating accrual of benefits for some or all future services of present employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanCurtailments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of decrease in accumulated postretirement benefit obligation from one-percentage-point decrease in assumed health care cost trend rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of decrease in service and interest cost components of net periodic postretirement benefit cost from one-percentage-point decrease in assumed health care cost trend rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase in accumulated postretirement benefit obligation from one-percentage-point increase in assumed health care cost trend rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase in service and interest cost components of net periodic postretirement benefit cost from one-percentage-point increase in assumed health care cost trend rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost (credit) included in accumulated other comprehensive (income) loss expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedAmortizationNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount included in accumulated other comprehensive (income) loss for prior service cost (credit) expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of foreign currency translation gain (loss) which (increases) decreases benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(5) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 + Details
Name: | us-gaap_DefinedBenefitPlanFundedStatusOfPlan
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (l) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost recognized for passage of time related to defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanInterestCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) in benefit obligation of defined benefit plan from change, classified as other. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanOtherChanges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of accumulated benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2417-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value of plan assets for defined benefit pension plan with accumulated benefit obligation in excess of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2417-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(5) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of contributions received by defined benefit plan from participant which increases plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of receipt from prescription drug subsidy which increases plan assets of defined benefit postretirement plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsPrescriptionDrugSubsidyReceipt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from purchases, sales and settlements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(iv)(02)(B) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPurchasesSalesAndSettlements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from settlement and curtailment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanServiceCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(ii) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(iv)(01) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(8) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanSettlementsPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan, for assets transferred into (out of) Level 3 of fair value hierarchy. Includes, but is not limited to, transfer due to change in observability of significant inputs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(iv)(02)(C) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Ultimate trend rate for health care cost for defined benefit postretirement plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (l) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net asset value of investment in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes fair value disclosure. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -URI http://asc.fasb.org/extlink&oid=66048111&loc=SL6742756-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 35 -Paragraph 59 -URI http://asc.fasb.org/extlink&oid=65894324&loc=SL6740821-110257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 35 -Paragraph 54B -URI http://asc.fasb.org/extlink&oid=65894324&loc=SL7495116-110257 + Details
Name: | us-gaap_InvestmentsNetAssetValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before tax, of cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e689-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 35 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82918529&loc=d3e30304-110892 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (b,d) -URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i-k) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, before tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e689-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1731-114919 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(20)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1731-114919 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(24)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 + Details
Name: | us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=kmi_CommonCollectiveTrustsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_PrivateEquityFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=kmi_LimitedPartnershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CashMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_ShortTermInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_MutualFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_FixedIncomeSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_GuaranteedInvestmentContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_HedgeFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=kmi_ClassPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kmi_RateTypeAxis=kmi_BenefitObligationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kmi_RateTypeAxis=kmi_DiscountrateforinterestonbenefitobligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kmi_RateTypeAxis=kmi_DiscountrateforservicecostMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kmi_RateTypeAxis=kmi_DiscountrateforinterestonservicecostMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_FixedIncomeSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_DomesticPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_OtherInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_ForeignPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_FixedIncomeFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=kmi_MasterLimitedPartnershipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kmi_TimeframeAxis=kmi_EachofNextFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kmi_TimeframeAxis=kmi_FiveFiscalYearsThereafterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_OtherAffiliatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=kmi_ClosedtoNewParticipantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=kmi_SavingsPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=kmi_SavingsPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=kmi_KinderMorganIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=kmi_CompanySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kmi_FairValueValuationMethodologyAxis=kmi_WithinFairValueHierarchyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |