Changes in Warranty Liabilities (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Warranty Liability [Line Items]
Balance, beginning of period	$ 77	$ 85	$ 72	$ 85
Amounts accrued for current period sales	6	15	15	25
Adjustments of prior accrual estimates	2		3	1
Settlements of warranty claims	(7)	(10)	(13)	(23)
Currency impact	(1)	2		4
Balance, end of period	$ 77	$ 92	$ 77	$ 92