Guarantees and Indemnifications (Details) (USD $) In Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2011	Jun. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Product Liability Contingency [Line Items]
Guarentee to joint venture bank lender	$ 3.4			$ 3.4
Prior Agreement to contribute to JV	3.0			3.0
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning Balance	30.6		30.6	29.5	32.9
Accrued to expense	9.8	3.8	0.9	14.7	4.3
Payments made	(5.2)		(4.0)	(9.0)	(9.7)
Ending Balance	35.2	30.6	27.5	35.2	27.5
Current portion of warranty reserves	(12.0)		(10.0)	(12.0)	(10.0)
Long-term portion of warranty reserves	23.2		17.5	23.2	17.5
Net Amount at Risk by Product and Guarantee, Separate Account Value	2.2			2.2
Damages from Product Defects [Member]
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Accrued to expense	$ 8.2