Intangible Assets, net (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Intangible assets subject to amortization:
Intangible assets subject to amortization, Gross Carrying Amount	$ 719.6		$ 717.2
Intangible assets subject to amortization, Accumulated Amortization	(425.7)		(402.8)
Intangible assets
Intangible assets, Gross Carrying Amount	1,477.9		1,474.8
Amortization expense for intangible assets	21.5	$ 23.7
Changes in intangible assets due to foreign currency translation gains (losses)	1.7	$ (2.3)
Summary of estimated aggregate amortization expense for each of the succeeding five years
2019 (remaining six months)	21.6
2020	43.1
2021	41.4
2022	36.7
2023	30.7
2024	27.2
Trade names
Intangible assets not subject to amortization:
Intangible assets not subject to amortization, Gross Carrying Amount	$ 758.3		757.6
Covenants not to compete
Intangible assets subject to amortization:
Weighted average amortizable life in years	4 years 9 months 18 days
Intangible assets subject to amortization, Gross Carrying Amount	$ 0.8		0.8
Intangible assets subject to amortization, Accumulated Amortization	$ (0.5)		(0.4)
Customer lists/relationships
Intangible assets subject to amortization:
Weighted average amortizable life in years	15 years
Intangible assets subject to amortization, Gross Carrying Amount	$ 709.6		707.3
Intangible assets subject to amortization, Accumulated Amortization	$ (416.2)		(393.4)
Software
Intangible assets subject to amortization:
Weighted average amortizable life in years	10 years
Intangible assets subject to amortization, Gross Carrying Amount	$ 8.1		8.1
Intangible assets subject to amortization, Accumulated Amortization	$ (8.1)		(8.1)
Other
Intangible assets subject to amortization:
Weighted average amortizable life in years	7 years 6 months
Intangible assets subject to amortization, Gross Carrying Amount	$ 1.1		1.0
Intangible assets subject to amortization, Accumulated Amortization	$ (0.9)		$ (0.9)