Debt (Schedule of Short-term Debt) (Details) - USD ($) $ in Millions		Jun. 30, 2015	Dec. 31, 2014
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Current installments of long-term debt		$ 26	$ 25
Short-term borrowings, including amounts due to affiliates	[1]	67	77
Accounts receivable securitization facility	[2]	30	35
Total		$ 123	$ 137
Weighted average interest rate, short-term borrowings		4.50%	4.70%
Weighted average interest rate, credit facility		0.70%	0.70%
Accounts Receivable Securitization Facility [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Accounts receivable securitization facility	[3]	$ 30

[1] The weighted average interest rate was 4.5% and 4.7% as of June 30, 2015 and December 31, 2014, respectively.

[2] The weighted average interest rate was 0.7% as of June 30, 2015 and December 31, 2014.

[3] The Company repaid $15 million of borrowings outstanding during the six months ended June 30, 2015.