Contingencies (Details) (Parent, USD $)	1 Months Ended	3 Months Ended	6 Months Ended
	Mar. 31, 2011	Dec. 31, 2010	Jun. 30, 2011	Dec. 31, 1993
Percentage of asbestos plaintiffs
Sale of goods containing asbestos from 1948 to 1958			$ 40,000,000
Approximate plaintiffs and claimants			5,700
Claims likely to be asserted in future (in number of claims)			500
Claims disposed of to date (in number of claims)			384,000
Average indemnity payment per claim			7,900
Deferred amounts payable		26,000,000	21,000,000
Asbestos-related liability, total amount accrued beginning in 1993 through 2010 before insurance recoveries		3,820,000,000		975,000,000
Total amount awarded by jury against defendants	90,000,000
Number of defendants	4
Compensatory damages assessed against defendants	10,000,000
Punitive damages assessed against the Company	40,000,000
Future asbestos-related costs		170,000,000
Asbestos-related charges, net of tax		170,000,000
Damages unspecified or sufficient to invoke jurisdictional minimum
Percentage of asbestos plaintiffs
Percentage of asbestos plaintiffs, approximate percentage (as a percent)		76.00%
Damages of $15 million or less
Percentage of asbestos plaintiffs
Asbestos damages plead by plaintiff high end of range		15,000,000
Percentage of asbestos plaintiffs, approximate percentage (as a percent)		22.00%
Damages greater than $15 million but less than $100 million
Percentage of asbestos plaintiffs
Asbestos damages plead by plaintiff low end of range		15,000,000
Asbestos damages plead by plaintiff high end of range		100,000,000
Percentage of asbestos plaintiffs, approximate percentage (as a percent)		2.00%
Damages of $100 million or greater but less than $122 million
Percentage of asbestos plaintiffs
Asbestos damages plead by plaintiff low end of range		100,000,000
Asbestos damages plead by plaintiff high end of range		$ 122,000,000
Percentage of asbestos plaintiffs, fewer than percentage (as a percent)		1.00%