XML 52 R40.htm IDEA: XBRL DOCUMENT v3.7.0.1
Related Party Transactions (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Related Party Transaction [Line Items]      
Cash distributions $ 625 $ 750  
Related Party Transaction Revenue with Affiliates 37 41  
Related Party Transaction Expenditures from Transactions with Related Party 79 70  
Parent Company      
Related Party Transaction [Line Items]      
Cash distributions 625 750  
Tax payments to parent company   $ 1  
Accounts Payable, Related Parties 429   $ 109
Maximum [Member] | Parent Company      
Related Party Transaction [Line Items]      
Tax payments to parent company $ 1