Commitments and Contingencies (Product Warranty Liability) (Details) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Balance at beginning of period	$ 632.1	$ 620.2
Reductions for payments	(169.9)	(202.6)
Accruals for warranties issued during the current period	179.4	212.1
Changes to accruals related to preexisting warranties	(0.6)	(0.4)
Translation	0.5	(0.6)
Balance at end of period	$ 641.5	$ 628.7