Intangible Assets and Goodwill - Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 479.3		$ 479.3		$ 480.4
Accumulated amortization	(172.1)		(172.1)		(158.7)
Intangible assets, net	307.2		307.2		321.7
Amortization expense	7.3	6.2	14.5	12.2
Trade Names
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	345.6		345.6		347.1
Accumulated amortization	(64.1)		(64.1)		(57.5)
Intangible assets, net	281.5		281.5		289.6
Software
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	58.3		58.3		57.9
Accumulated amortization	(52.4)		(52.4)		(51.1)
Intangible assets, net	5.9		5.9		6.8
Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	60.8		60.8		61.5
Accumulated amortization	(49.9)		(49.9)		(45.5)
Intangible assets, net	10.9		10.9		16.0
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	14.6		14.6		13.9
Accumulated amortization	(5.7)		(5.7)		(4.6)
Intangible assets, net	$ 8.9		$ 8.9		$ 9.3