Notional Amount of Currency Forward Contracts Designated and Undesignated as Cash Flow Hedges (Detail) (USD $) In Millions, unless otherwise specified			6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 U.S. dollar	Jun. 30, 2012 Euro	Jun. 30, 2012 British pound	Jun. 30, 2012 Swedish krona	Jun. 30, 2012 Australian dollar	Jun. 30, 2012 Indian rupee
Fair Value Measurements [Line Items]
Traded Currency			Mexican peso	U.S. dollar, Canadian dollar, Hungarian forint, Japanese yen	U.S. dollar, Euro	Euro	U.S. dollar	U.S. dollar, British pound, Euro
Notional Amount Cash Flow Hedges	$ 136		$ 91	$ 19	$ 13	$ 7	$ 6
Notional Amount Undesignated	15					4	1	10
Total	$ 151	$ 213	$ 91	$ 19	$ 13	$ 11	$ 7	$ 10
Maturity			2013-06	2013-06	2013-06	2013-06	2013-03	2012-12