Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Litigation matters [Member]	Dec. 31, 2012 Litigation matters [Member]
Loss Contingencies [Line Items]
Litigation accruals on an undiscounted basis					$ 5.7	$ 4.4
Operating lease obligations [Abstract]
Lease and rental expense included in costs and expenses	19.6	26.0	64.9	71.1
Other claims [Abstract]
Claims against various parties related to contractual agreements	38.9		38.9
Claims against us related to contractual agreements	$ 44.1		$ 44.1