Intangible Assets, net (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Intangible assets subject to amortization:
Intangible assets subject to amortization, Gross Carrying Amount	$ 633.0		$ 633.1
Intangible assets subject to amortization, Accumulated Amortization	(424.4)		(406.2)
Intangible assets
Intangible assets, Gross Carrying Amount	1,353.3		1,353.3
Amortization expense for intangible assets	18.4	$ 20.9
Changes in intangible assets due to foreign currency translation gains (losses)	0.2	(3.2)
Summary of estimated aggregate amortization expense for each of the succeeding five years
2021 (remaining six months)	18.1
2022	35.9
2023	31.6
2024	28.1
2025	23.9
2026	14.4
Trade names
Intangible assets not subject to amortization:
Intangible assets not subject to amortization, Gross Carrying Amount	$ 720.3		720.2
Intangible assets
Impairment losses of intangible assets, indefinite-lived		64.3
Covenants not to compete
Intangible assets subject to amortization:
Weighted average amortizable life in years	5 years
Intangible assets subject to amortization, Gross Carrying Amount	$ 0.7		0.7
Intangible assets subject to amortization, Accumulated Amortization	$ (0.5)		(0.5)
Customer lists/relationships
Intangible assets subject to amortization:
Weighted average amortizable life in years	14 years 10 months 24 days
Intangible assets subject to amortization, Gross Carrying Amount	$ 623.4		623.2
Intangible assets subject to amortization, Accumulated Amortization	$ (415.2)		(396.7)
Intangible assets
Impairment losses of intangible assets, finite-lived		$ 24.7
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 2 months 12 days
Intangible assets subject to amortization, Gross Carrying Amount	$ 0.8		1.1
Intangible assets subject to amortization, Accumulated Amortization	$ (0.6)		$ (0.9)