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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	41 Months Ended			3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2010	Jan. 31, 2008	Jun. 30, 2011 Asbestos	Jun. 30, 2010 Asbestos	Mar. 31, 2010 Asbestos	Sep. 30, 2011 Asbestos LegalMatter	Sep. 30, 2010 Asbestos	Dec. 31, 2010 Asbestos LegalMatter	Sep. 30, 2011 Environmental	Dec. 31, 2010 Environmental
Asbestos claims pending								26,000		30,000
Asbestos claims settled and awaiting final documentation and dismissal, with or without payment								11,000		11,000
Asbestos claims accrued								$ 93		$ 101
Time horizon used to estimate liability								15 years
Accrued environmental liabilities											12	13
Probable recovery receivable								50		52	1	1
Other income, credit for recovery of past outlays claims					6
Asbestos insurance receivable, pre-tax (expense) credit						1	(2)		(1)
Other product liabilities, non-asbestos	1		1
Shares set aside for unsecured bankruptcy claims				28
Value of shares set aside for unsecured bankruptcy claims				640
Shares distributed for unsecured bankruptcy claims	4	24
Value of shares distributed for unsecured bankruptcy claims	84	558
Total shares issued for bankruptcy claims		94
Value of total shares issued for bankruptcy claims		2,186
Unsecured bankruptcy claims		$ 2,266