Supplemental Guarantor and Parent Company Condensed Financial Information (Intercompany Cash And Non-Cash Transactions) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 30, 2012	Dec. 31, 2011
Statement Cash and Non-Cash Transactions [Line Items]
Ending Balance	$ 0	$ 0
Parent Company [Member]
Statement Cash and Non-Cash Transactions [Line Items]
Beginning Balance	1,210.4	1,169.7
Deferred tax	3.5	8.0
Equity based awards	3.5	12.7
Foreign currency and other	(2.7)	(1.0)
Cash transactions	12.7	21.0
Ending Balance	$ 1,227.4	$ 1,210.4