Intangible Assets, net (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Intangible assets subject to amortization:
Intangible assets subject to amortization, Gross Carrying Amount	$ 753.8	$ 719.3
Intangible assets subject to amortization, Accumulated Amortization	(289.9)	(241.0)
Intangible assets
Intangible assets, Gross Carrying Amount	1,531.5	1,454.8
Changes in intangible assets due to foreign currency translation losses	8.1
Impairment of intangible assets	0	14.9	2.5
Amortization expense for intangible assets	56.7	54.9	45.4
Summary of estimated aggregate amortization expense for each of the next five years
2015	57.1
2016	55.4
2017	50.9
2018	44.8
2019	44.0
2014 acquisitions
Intangible assets
Intangible assets acquired, excluding goodwill	92.6
Trade names
Intangible assets not subject to amortization:
Intangible assets not subject to amortization, Gross Carrying Amount	777.7	735.5
Intangible assets
Impairment of intangible assets		14.9
Covenants not to compete
Intangible assets subject to amortization:
Life in Years	4 years 3 months 18 days
Intangible assets subject to amortization, Gross Carrying Amount	2.3	8.0
Intangible assets subject to amortization, Accumulated Amortization	(1.7)	(7.3)
Loan fees
Intangible assets subject to amortization:
Life in Years	3 years 9 months 18 days
Intangible assets subject to amortization, Gross Carrying Amount	41.5	41.5
Intangible assets subject to amortization, Accumulated Amortization	(27.3)	(24.1)
Customer lists/relationships
Intangible assets subject to amortization:
Life in Years	14 years 3 months 18 days
Intangible assets subject to amortization, Gross Carrying Amount	694.7	654.3
Intangible assets subject to amortization, Accumulated Amortization	(249.3)	(200.6)
Software - internal use
Intangible assets subject to amortization:
Life in Years	10 years
Intangible assets subject to amortization, Gross Carrying Amount	8.1	8.1
Intangible assets subject to amortization, Accumulated Amortization	(7.1)	(6.3)
Other
Intangible assets subject to amortization:
Life in Years	5 years 2 months 12 days
Intangible assets subject to amortization, Gross Carrying Amount	7.2	7.4
Intangible assets subject to amortization, Accumulated Amortization	$ (4.5)	$ (2.7)