Investments in Affiliates (Schedule of Balances with Affiliates) (Details) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Non-trade receivables		$ 26	$ 23
Total due from affiliates		26	23
Short-term borrowings	[1]	17	16
Trade payables		45	34
Current Other liabilities		8	6
Total due to affiliates		$ 70	$ 56

[1] The Company has agreements with certain affiliates whereby excess affiliate cash is lent to and managed by the Company at variable interest rates governed by those agreements.