Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Jun. 30, 2012 LegalMatter	Dec. 31, 2011 LegalMatter
Commitments and Contingencies Disclosure [Line Items]
Other product liabilities, non-asbestos		$ 1,000,000	$ 1,000,000
Asbestos
Commitments and Contingencies Disclosure [Line Items]
Asbestos claims pending		25,000	26,000
Asbestos claims settled and awaiting final documentation and dismissal, with or without payment		1,000	1,000
Asbestos claims accrued		83,000,000	89,000,000
Time horizon used to estimate liability		15 years
Probable recovery receivable		52,000,000	53,000,000
Other income, credit for recovery of past outlays claims	6,000,000
Environmental Liability
Commitments and Contingencies Disclosure [Line Items]
Probable recovery receivable		2	2
Accrued environmental liabilities		$ 12	$ 13