Intangible Assets and Goodwill - Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 139.5	$ 144.1
Accumulated amortization	(70.9)	(62.2)
Intangible assets, net	68.6	81.9
Amortization expense	13.2	23.9	22.2
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Future estimated amortization expense, 2014	12.6
Future estimated amortization expense, 2015	11.9
Future estimated amortization expense, 2016	8.5
Future estimated amortization expense, 2017	7.7
Future estimated amortization expense, 2018	6.3
Trade Names
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	34.3	37.7
Accumulated amortization	(9.2)	(6.0)
Intangible assets, net	25.1	31.7
Software
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	58.5	58.4
Accumulated amortization	(53.3)	(52.0)
Intangible assets, net	5.2	6.4
Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	20.4	21.2
Accumulated amortization	(2.1)	(1.0)
Intangible assets, net	18.3	20.2
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	26.3	26.8
Accumulated amortization	(6.3)	(3.2)
Intangible assets, net	$ 20.0	$ 23.6