Derivatives and Hedging - Interest Rate Risk Management (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Gain (loss) recognized in accumulated other comprehensive income	$ 0	$ 0	$ 9,000,000
Estimated pretax losses currently included within Accumulated Other Comprehensive Loss that will be reclassified to earnings in next twelve months	12,000,000
(Loss) income on financial instruments	(14,000,000)	(24,000,000)	(15,000,000)
Not Designated as Hedging Instrument | Foreign exchange contracts
Derivative [Line Items]
(Loss) income on financial instruments	$ 200,000	$ 8,000,000	$ 18,000,000