Debt (Schedule of Short-term Debt) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Current installments of long-term debt	$ 625		$ 24
Short-term borrowings, including amounts due to affiliates(1)	105	[1]	103	[1]
Total	765		177
Weighted average interest rate, short-term borrowings	3.90%		4.40%
Accounts Receivable Securitization Facility [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Accounts receivable securitization facility(2)	$ 35	[2]	$ 50	[2]
Weighted average interest rate, credit facility	0.70%		0.70%

[1] The weighted average interest rate was 3.9% and 4.4% as of September 30, 2014 and December 31, 2013, respectively.

[2] The weighted average interest rate was 0.7% as of September 30, 2014 and December 31, 2013.