v3.3.1.900
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