Debt (Schedule of Short-term Debt) (Details) - USD ($) $ in Millions		Sep. 30, 2016	Dec. 31, 2015
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Current installments of long-term debt		$ 19	$ 56
Short-term borrowings, including amounts due to affiliates	[1]	73	52
Total		$ 92	$ 513
Weighted average interest rate, short-term borrowings		3.00%	3.30%
Accounts Receivable Securitization Facility [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Borrowings outstanding	[2]		$ 55
Secured Debt [Member] | Accounts Receivable Securitization Facility [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Borrowings outstanding	[2],[3]	$ 0
Weighted average interest rate for lines of credit			0.80%
Revolving Credit Facility [Member] | Senior Secured Revolving Credit Facility [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Borrowings outstanding	[4]	$ 0	$ 350
Weighted average interest rate for lines of credit			1.80%

[1] The weighted average interest rate was 3.0% and 3.3% as of September 30, 2016 and December 31, 2015, respectively.

[2] The weighted average interest rate was 0.8% as of December 31, 2015.

[3] The Company repaid $55 million during the nine months ended September 30, 2016.

[4] The weighted average interest rate was 1.8% as of December 31, 2015.