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Summary of Significant Accounting Policies Effect of change related to ASU 2014-09 (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017
Revenues | $ 3,749 |  |
Depreciation, amortization and accretion | (49) |  |
Other current assets | 71 | $ 89 | $ 81
Property and equipment, net | 1,522 | 1,557 | 1,557
Intangible assets, net | (656) | (668) | (768)
Other noncurrent assets | 91 | 84 | 45
Other noncurrent liabilities | 137 | 126 | 125
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] |  |  |
Sales Revenue From Wholesale Fuel Sales To Third Parties | (10) |  |
Other | 0 |  |
Other | (1) |  |
Other operating | (2) |  |
Depreciation, amortization and accretion | (6) |  |
Other current assets | 9 |  |
Property and equipment, net | 0 |  |
Intangible assets, net | (105) |  |
Other noncurrent assets | 42 |  |
Other noncurrent liabilities | 1 |  |
Total partners' capital | (55) |  |
Calculated under Revenue Guidance in Effect before Topic 606 [Member] |  |  |
Sales Revenue From Wholesale Fuel Sales To Third Parties | 3,104 |  |
Other | 41 |  |
Other | (15) |  |
Other operating | (100) |  |
Depreciation, amortization and accretion | (55) |  |
Other current assets | 62 |  |
Property and equipment, net | 1,522 |  |
Intangible assets, net | (761) |  |
Other noncurrent assets | 49 |  |
Other noncurrent liabilities | 136 |  |
Total partners' capital | 987 |  |
Common Units |  |  |
Total partners' capital | $ 932 | $ 1,893 | $ 1,947

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