Supplemental Guarantor And Parent Company Condensed Financial Information (Intercompany Cash And Non-Cash Transactions) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Statement Cash and Non-Cash Transactions [Line Items]
Beginning Balance	$ 0
Cash transactions	0	0	0
Ending Balance	0	0
Parent Company [Member]
Statement Cash and Non-Cash Transactions [Line Items]
Beginning Balance	1,210.4	1,169.7	1,091.5
Convertible notes and other debt	0	0	0
Deferred tax	5.9	8.0	30.5
Equity based awards	11.7	12.7	9.0
Foreign currency and other	(3.4)	(1.0)	0.7
Cash transactions	342.1	21.0	38.0
Ending Balance	$ 1,566.7	$ 1,210.4	$ 1,169.7