v3.8.0.1
Debt Total Debt (Details) - USD ($)
$ in Millions
Sep. 30, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Total debt $ 4,134 $ 4,109
Unamortized issuance costs and premium (a) [1] (22) (55)
Current maturities (1) (1)
Debt, Net of Current Maturities and Unamortized Issuance Costs $ 4,111 [2] $ 4,053
[1] Includes premium of $25 million related to the incremental fair value of the WNRL senior notes upon acquisition.
[2] (a)Adjusted to include the historical results of the Predecessors. See Note 1 for further discussion.