Changes in Warranty Liabilities (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Balance, beginning of period	$ 85	$ 83	$ 100
Amounts accrued for current period sales	36	41	34
Adjustments of prior accrual estimates	(4)	11	3
Settlements of warranty claims	(44)	(50)	(56)
Currency impact and other	(1)		2
Balance, end of period	$ 72	$ 85	$ 83