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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

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Amount recognized in net periodic benefit cost (credit) and other comprehensive (income) loss.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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.

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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.

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Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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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.

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Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.

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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.

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Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount, before benefit payment, of receipt from prescription drug subsidy which increases benefit obligation of defined benefit postretirement plan.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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