Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended				48 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Dec. 31, 2011	Jun. 10, 2011
Commitments and Contingencies [Abstract]
Certain claims (Note 19)	$ 157.8	$ 75.0	$ 35.0	$ 69.0	$ 336.8
Selling, general and administrative	4.2	15.4	24.6	7.2	51.4
Certain Claims Selling General And Administrative Net	162.0	90.4	59.6	76.2	388.2
Commitments and Contingencies (Textual) [Abstract]
Self-insured retention amount	20.00%
Receivables In Other Assets	76.3				76.3
Estimated liability outstanding	311.1				311.1
Estimated liability classified as short-term	50.0	42.5			50.0
Estimated liability classified as long-term	261.1	90.3			261.1
Period for payment of majority of claims	5 years
Compensatory damages awarded		27.6
Percentage of fault apportioned to plaintiffs		30.00%
Percentage of fault apportioned to company		34.00%
Percentage of fault apportioned to unrelated third party		36.00%
Verdict in full and entered judgement						$ 20.3