Fair Value Measurements and Derivatives - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Unobservable Input Risk Premium	2.50%
Derivative, Notional Amount	$ 549	$ 217
Deferred gains (losses) which are reported in AOCI that are expected to be reclassified to earnings during the next twelve months		3
Foreign Exchange Forward [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	252	217
Currency Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	297
Other Current Assets [Member] | Fair Value, Measurements, Recurring
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notes receivable	$ 75