Commitments and Contingencies Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments and Contingencies Disclosure [Abstract]

Environmental accrual rollforward table

The following table presents the changes in such accruals, which are primarily included in Long-term liabilities.

	Year Ended December 31,
	2011			2010			2009
Beginning balance	$	20.2		$	9.7		$	9.6
Additional accruals	3.9			13.9			2.4
Less expenditures	(2.1		)	(3.4		)	(2.3		)
Ending balance	$	22.0		$	20.2		$	9.7