v3.5.0.2

Commitments and Contingencies, Commitments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Operating Leases |  |  |
Site contingency, accrual assumptions | Our environmental liabilities are estimates using internal and third-party assessments and available information to date. It is possible these estimates will change as additional information becomes available. |  |
Total operating lease expense | $ 10 | $ 8 | $ 6
Operating Leases |  |  |
Operating leases due 2016 | 12 |  |
Operating leases due 2017 | 10 |  |
Operating leases due 2018 | 9 |  |
Operating leases due 2019 | 8 |  |
Operating leases due 2020 | 7 |  |
Operating leases due Thereafter | 63 |  |
Operating leases Total | 109 |  |
Purchase Obligations |  |  |
Purchase obligations due 2016 | 85 |  |
Purchase obligations due 2017 | 84 |  |
Purchase obligations due 2018 | 84 |  |
Purchase obligations due 2019 | 84 |  |
Purchase obligations due 2020 | 84 |  |
Purchase obligations due Thereafter | 61 |  |
Purchase obligations Total | 482 |  |
Total Contractual Obligation |  |  |
Total due 2016 | 97 |  |
Total due 2017 | 94 |  |
Total due 2018 | 93 |  |
Total due 2019 | 92 |  |
Total due 2020 | 91 |  |
Total due Thereafter | 124 |  |
Total | 591 |  |
Total service agreement expense | 175 | $ 117 | $ 56
Contractual obligation | $ 53 |  |
Maximum |  |  |
Operating Leases |  |  |
Remaining term of operating leases (years) | 20 years |  |
Los Angeles Terminal Assets Acquisition |  |  |
Operating Leases |  |  |
Years to identify conditions after the date of purchase (years) | 5 years |  |

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