Warranties (Tables)

9 Months Ended

Sep. 30, 2011

Warranties / Contingencies [Abstract]

Changes in the accruals for warranties

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2011			2010			2011			2010
				(in millions)
Beginning balance	$	12.0		$	18.6		$	13.2		$	19.6
Warranty costs incurred		(1.6	)		(1.0	)		(4.3	)		(3.2	)
Warranty originations and revisions		2.1			0.4			4.6			3.3
Warranty expirations		(0.9	)		(0.5	)		(1.9	)		(2.2	)
Ending balance	$	11.6		$	17.5		$	11.6		$	17.5