Investments in Affiliates (Schedule of Balances with Affiliates) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Non-trade receivables	$ 31		$ 37
Total due from affiliates	31		37
Short-term borrowings	16	[1]	26	[1]
Trade payables	39		24
Current Other liabilities	6		6
Total due to affiliates	$ 61		$ 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.