Debt Obligations - Narrative (Details) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2016		Dec. 31, 2015
Debt Instrument [Line Items]
Short-term borrowings		$ 259		$ 13
Long-term debt, excluding current maturities		3,198		3,239
Unamortized Debt Issuance Expense		(32)		(34)
Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt, excluding current maturities		$ 844		$ 956
Long-term Debt, Weighted Average Interest Rate	[1]	3.11%		2.95%
Other Debt [Member]
Debt Instrument [Line Items]
Long-term debt, excluding current maturities		$ 11		$ 17
Long-term Debt, Weighted Average Interest Rate	[1]	7.09%		7.16%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt, excluding current maturities		$ 175		$ 100
Long-term Debt, Weighted Average Interest Rate	[1]	2.72%		2.61%
5% Notes Due 2022 [Member]
Debt Instrument [Line Items]
Long-term debt, excluding current maturities		$ 600		$ 600
4.625% Notes Due 2021 [Member] [Member]
Debt Instrument [Line Items]
Long-term debt, excluding current maturities		500		500
5.875% Notes due 2021 [Member]
Debt Instrument [Line Items]
Long-term debt, excluding current maturities		400		400
6.375% Notes due 2023 [Member]
Debt Instrument [Line Items]
Long-term debt, excluding current maturities		700		700
Trade Receivables Securitization Facility [Member]
Debt Instrument [Line Items]
Short-term borrowings		$ 200		0
Short-term Debt, Weighted Average Interest Rate	[1]	1.12%
Term Loan [Member]
Debt Instrument [Line Items]
Long-term Debt, Current Maturities		$ 45		0
Short-term Debt, Weighted Average Interest Rate	[1]	3.11%
Other Debt [Member]
Debt Instrument [Line Items]
Short-term borrowings		$ 14		$ 13
Short-term Debt, Weighted Average Interest Rate		7.41%	[1]	6.34%	[2]
Federal Funds Rate [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		0.50%

[1] (1) Interest rates are weighted average interest rates as of June 30, 2016 and December 31, 2015. The Senior Secured Credit Facility incorporates the impact of the interest rate swap agreement described in Note 11, "Derivatives and Hedging Instruments."

[2] {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOjhiMWIzZmI5N2NlMzQzODQ5MjA2M2ZmZjFjY2Q0MmE5fFRleHRTZWxlY3Rpb246MzI0NDk2NEJDMzVCODRERjg1RkY5NjkxQkQ2QTlFNkQM}