Guarantees and Indemnifications (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Sep. 30, 2011	Jun. 30, 2013	Jun. 30, 2012
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning Balance	$ 19.4	$ 27.9		$ 21.4	$ 30.3
Accrued to expense	0	0.2		0.3	0.5
Product Warranty Accrual, Period Increase (Decrease)	4.1	0	(1.0)	4.1	0
Payments made	(2.5)	(1.6)		(4.8)	(4.3)
Total warranty reserves	21.0	26.5		21.0	26.5
Current portion of warranty reserves	(12.0)	(12.0)		(12.0)	(12.0)
Long-term portion of warranty reserves	$ 9.0	$ 14.5		$ 9.0	$ 14.5