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Regulatory Matters, Commitments, Contingencies And Environmental Liabilities (Narrative) (Details) | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Feb. 28, 2017 USD ($) | Oct. 31, 2015 USD ($) | Apr. 30, 2015 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Feb. 01, 2017 USD ($) | Apr. 30, 2016 USD ($) | Jan. 31, 2012 USD ($)
Payments for Environmental Liabilities |  |  |  | $ 43,000,000 | $ 38,000,000 |  |  |  |
Lease Expiration Date |  |  |  | Dec. 31, 2034 |  |  |  |  |
Operating leases rent expense |  |  |  | $ 129,000,000 | 205,000,000 | $ 98,000,000 |  |  |
Total environmental liabilities |  |  |  | 385,000,000 | 368,000,000 |  |  |  |
Operating Leases, Rent Expense, Contingent Rentals |  |  |  | $ 23,000,000 | 26,000,000 | $ 24,000,000 |  |  |
Site Contingency, Number of Sites Needing Remediation |  |  |  | 50 |  |  |  |  |
Proposed Environmental Penalty |  |  |  | $ 0 |  |  |  |  |
Payments to Acquire Businesses, Gross |  | $ 382,000,000 |  |  |  |  |  |  |
Long-term Debt |  |  |  | 43,802,000,000 | 36,968,000,000 |  |  |  |
AmeriGas [Member] |  |  |  |  |  |  |  |  |
Contingent Residual Support Agreement Obligation |  |  |  |  |  |  |  |  | $ 1,550,000,000
Sunoco LP [Member] |  |  |  |  |  |  |  |  |
Long-term Debt |  |  |  | 4,514,000,000 | 1,958,000,000 |  |  |  |
Related To Deductibles [Member] |  |  |  |  |  |  |  |  |
Accrual for loss contingency |  |  |  | $ 93,000,000 | 40,000,000 |  |  |  |
MTBE Sites [Member] |  |  |  |  |  |  |  |  |
Site Contingency, Number of Sites Needing Remediation |  |  |  | 19 |  |  |  |  |
Compensatory Damages [Member] |  |  |  |  |  |  |  |  |
Gain Contingency, Unrecorded Amount |  |  |  | $ 319,000,000 |  |  |  |  |
Disgorgement [Member] |  |  |  |  |  |  |  |  |
Gain Contingency, Unrecorded Amount |  |  |  | 595,000,000 |  |  |  |  |
Expense Reimbursement [Member] |  |  |  |  |  |  |  |  |
Gain Contingency, Unrecorded Amount |  |  |  | 1,000,000 |  |  |  |  |
Final Judgement [Member] |  |  |  |  |  |  |  |  |
Gain Contingency, Unrecorded Amount |  |  |  | 536,000,000 |  |  |  |  |
New Mexico Environmental Department [Member] |  |  |  |  |  |  |  |  |
Total environmental liabilities |  |  |  | 250,000 |  |  |  |  |
Civil penalties |  |  |  | 465,000 |  |  |  |  |
Texas Commission on Environmental Quality [Member] |  |  |  |  |  |  |  |  |
Total environmental liabilities |  |  |  | 50,000 |  |  |  |  |
Supplemental Environmental Project [Member] |  |  |  |  |  |  |  |  |
Proposed Environmental Penalty |  |  |  | $ 21,000 |  |  |  |  |
Dropdown of Sunoco LLC Interest [Member] |  |  |  |  |  |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage |  |  | 31.58% |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  | $ 775,000,000 |  |  |  |  |  |
Equity Issued in Business Combination, Fair Value Disclosure |  |  | $ 41,000,000 |  |  |  |  |  |
6.375% Senior Notes due April 2023 [Member] | Sunoco LP [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 6.375% |  |  |  |  |
Senior Notes |  |  |  | $ 800,000,000 | 800,000,000 |  |  |  |
6.25% Senior Notes due 2021 [Member] | Sunoco LP [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 6.25% |  |  |  | 6.25% |
Senior Notes |  |  |  | $ 800,000,000 | $ 0 |  |  | $ 800,000,000 |
Term loan due 2019 [Member] | Sunoco LP [Member] |  |  |  |  |  |  |  |  |
Long-term Debt |  |  |  | $ 2,035,000,000 |  |  |  |  |
Subsequent Event [Member] | AmeriGas [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 7.00% |  |
Contingent Residual Support Agreement Obligation |  |  |  |  |  |  | $ 122,000,000 |  |
Repayments of Senior Debt | $ 378,000,000 |  |  |  |  |  |  |  |

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