Debt (Schedule of Short-term Debt) (Details) - USD ($) $ in Millions		Dec. 31, 2016		Dec. 31, 2015
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Current installments of long-term debt		$ 27		$ 56
Short-term borrowings, including amounts due to affiliates	[1]	68		52
Total		$ 118		$ 513
Weighted average interest rate, short-term borrowings		3.10%		3.30%
Bank Loans Acquired from SOFTER [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Short-term SOFTER bank loans (Note 4)	[2]	$ 23		$ 0
Weighted average interest rate, short-term borrowings		1.20%
Revolving Credit Facility [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Line of Credit, Current	[4]	$ 0	[3]	$ 350
Weighted average interest rate, credit facility				1.80%
Accounts Receivable Securitization Facility [Member]
Short-Term Borrowings and Current Installments of Long-Term Debt - Third Party and Affiliates
Line of Credit, Current	[6]	$ 0	[5]	$ 55
Weighted average interest rate, credit facility				0.80%

[1] The weighted average interest rate was 3.1% and 3.3% as of December 31, 2016 and 2015, respectively.

[2] The weighted average interest rate was 1.2% as of December 31, 2016.

[3] The Company borrowed $409 million and repaid $411 million under its new senior unsecured revolving credit facility during the year ended December 31, 2016. The Company borrowed $245 million and repaid $595 million under its previous secured revolving credit facility during the year ended December 31, 2016.

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

[5] The Company repaid $55 million during the year ended December 31, 2016.

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