Notional Amount of Currency Forward Contracts Designated and Undesignated as Cash Flow Hedges (Detail) (USD $) In Millions, unless otherwise specified			9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 U.S. dollar	Sep. 30, 2012 Euro	Sep. 30, 2012 British pound	Sep. 30, 2012 Swedish krona	Sep. 30, 2012 Australian dollar	Sep. 30, 2012 Indian rupee
Fair Value Measurements [Line Items]
Traded Currency			Mexican peso	U.S. dollar, Canadian dollar, Hungarian forint, Japanese yen, British pound	U.S. dollar, Euro	Euro	U.S. dollar	U.S. dollar, British pound, Euro
Notional Amount Cash Flow Hedges	$ 204		$ 97	$ 43	$ 44	$ 12	$ 8
Notional Amount Undesignated	29			1	1	7	4	16
Total	$ 233	$ 213	$ 97	$ 44	$ 45	$ 19	$ 12	$ 16
Maturity			2013-09	2013-09	2013-09	2013-09	2013-09	2013-07