Summary of Other Income (Expense), Net (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	2 Months Ended	3 Months Ended			12 Months Ended
	Dec. 31, 2009	Oct. 31, 2009	Sep. 30, 2011	Mar. 31, 2011	Mar. 31, 2009	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Component of Other Income, Nonoperating [Line Items]
Interest income						$ 27	$ 30	$ 24
Export and other credits						10	7	19
Foreign exchange gain (loss)							(18)	9
Strategic transaction expenses	(11)					(11)	(1)	(16)
Gain (loss) on extinguishment of debt		(8)		(53)		(53)	(7)	35
Gain on sale of equity investments			60			60
Warranty claim settlement							(25)
Loss on sale of Structural Products business							(3)
Contract cancellation income					17			17
Other						25	18	10
Other income, net						$ 58	$ 1	$ 98