Fair Value Measurements and Derivatives - Additional Information (Details) - USD ($)	3 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Basis point spread		3.07%
Gain from interest expense differential on interest rate swap	$ 2,000,000
Net investment hedge translation adjustment	2,000,000
Cash flow hedge loss to be reclassified to earnings during next 12 months	7,000,000			$ 10,000,000
Interest Rate Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amounts of derivatives	0	$ 425,000,000
Proceeds from hedge	4,000,000
Amount recorded as ineffectiveness on interest rate fair value hedge	(4,000,000)
Fair value adjustment to the carrying amount of fixed-rate debt	8,000,000
Foreign Exchange Forward [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amounts of derivatives	196,000,000			296,000,000
Currency Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amounts of derivatives	199,000,000			$ 10,000,000
United States of America, Dollars [Member] | Foreign Exchange Forward [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amounts of derivatives	55,000,000
United States of America, Dollars [Member] | Currency Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amounts of derivatives	116,000,000
Fair Value Hedging [Member] | Interest Rate Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amounts of derivatives		$ 340,000,000
Net Investment Hedging [Member] | United States of America, Dollars [Member] | Foreign Exchange Forward [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amounts of derivatives	$ 0		$ 98,000,000
Senior Notes Due December 2024 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate	5.50%	5.50%		5.50%
Senior Notes Due December 2024 [Member] | Fair Value Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged fixed-rate debt		$ 425,000,000