Intangible Assets, net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Intangible assets subject to amortization:
Intangible assets subject to amortization, Gross Carrying Amount	$ 769.1		$ 760.2
Intangible assets subject to amortization, Accumulated Amortization	(417.5)		(405.7)
Intangible assets
Intangible assets, Gross Carrying Amount	1,533.0		1,517.8
Amortization expense for intangible assets	11.8	$ 13.4
Changes in intangible assets due to foreign currency translation losses	0.9
Summary of estimated aggregate amortization expense for each of the succeeding five years
2018 (remaining nine months)	35.7
2019	47.5
2020	47.5
2021	43.4
2022	35.2
2023	29.1
DuBose
Intangible assets
Intangible assets, Gross Carrying Amount	15.7
Trade names
Intangible assets not subject to amortization:
Intangible assets not subject to amortization, Gross Carrying Amount	763.9		757.6
Trade names | DuBose
Intangible assets not subject to amortization:
Intangible assets not subject to amortization, Gross Carrying Amount	$ 6.6
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	$ (0.4)		(0.4)
Customer lists/relationships
Intangible assets subject to amortization:
Weighted average amortizable life in years	14 years 6 months
Intangible assets subject to amortization, Gross Carrying Amount	$ 752.6		745.0
Intangible assets subject to amortization, Accumulated Amortization	$ (402.4)		(391.3)
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	5 years 8 months 12 days
Intangible assets subject to amortization, Gross Carrying Amount	$ 7.6		6.3
Intangible assets subject to amortization, Accumulated Amortization	$ (6.6)		$ (5.9)