Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Estimated income tax rate for forecasted income (as a percent)	33.70%		(64.60%)
Material change to aggregate recorded liabilities for uncertain tax positions in the next twelve months
Liability For Asbestos Warrant Settlement Amount1		$ 365.0	$ 365.0
Accrued interest and penalties related to uncertain tax positions	9.9	8.3	8.3
Accrued interest and penalties related to uncertain tax positions, Net of applicable tax benefits	6.9	5.5	5.5
Non-US tax positions open to examination
Material change to aggregate recorded liabilities for uncertain tax positions in the next twelve months
Material changes to uncertain tax positions, upper range	87
Expected recognition of a deferred charge	2.1
Examination issues and settlements with U.S. federal, state, and foreign tax authorities
Material change to aggregate recorded liabilities for uncertain tax positions in the next twelve months
Decrease in unrecognized tax benefits during the next 12 months	$ 78