Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Jan. 31, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Treasury Stock, Shares, Acquired	1.2
Treasury Stock Acquired, Average Cost Per Share	$ 15.29
Treasury Stock, Value, Acquired, Par Value Method	$ 18
Cash Dividend Declared Per Share:		$ 0.25	$ 0.25	$ 0.75	$ 0.75
Dividends, Common Stock, Cash		$ 33	$ 34	$ 99	$ 101
Accumulated other comprehensive (loss) income		(53)		(53)		$ (34)	$ (22)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax				(14)	(8)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				(5)	0
Other Comprehensive Income (Loss), Net of Tax				(19)	(8)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax		(53)	(30)	(53)	(30)
Gain on asset sales		43	0	43	0
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest		67	40	(10)	(39)
Income Tax Expense (Benefit)		12	11	5	(19)
Net Income (Loss) Attributable to Parent		54	34	(12)	(9)
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated other comprehensive (loss) income						(34)	(12)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax				6	(14)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				(5)	0
Other Comprehensive Income (Loss), Net of Tax				1	(14)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax		(33)	(26)	(33)	(26)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated other comprehensive (loss) income						(2)	(2)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax				0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				0	0
Other Comprehensive Income (Loss), Net of Tax				0	0
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax		(2)	(2)	(2)	(2)
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated other comprehensive (loss) income						(2)	(12)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax				(20)	6
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				0	0
Other Comprehensive Income (Loss), Net of Tax				(20)	6
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax		(22)	(6)	(22)	(6)
Accumulated Net Investment Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated other comprehensive (loss) income						$ 0	$ 0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax				0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				0	0
Other Comprehensive Income (Loss), Net of Tax				0	0
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax		$ 0	$ 0	0	$ 0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Gain on asset sales				5
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest				5
Income Tax Expense (Benefit)				0
Net Income (Loss) Attributable to Parent				$ 5