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Goodwill and Intangible Assets - Intangible Assets Other Than Goodwill (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount $ 2,050.7 $ 2,049.9
Accumulated amortization (700.3) (653.6)
Net carrying amount 1,350.4 1,396.3
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
Gross carrying amount 2,300.7 2,299.9
Accumulated amortization (700.3) (653.6)
Net carrying amount 1,600.4 1,646.3
Trade name (indefinite-lived)    
Indefinite-lived Intangible Assets [Line Items]    
Trade name (indefinite-lived) 250.0 250.0
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 1,987.1 1,986.2
Accumulated amortization (665.4) (624.0)
Net carrying amount 1,321.7 1,362.2
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
Accumulated amortization (665.4) (624.0)
Property tax abatement    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 16.0 16.0
Accumulated amortization (7.9) (7.4)
Net carrying amount 8.1 8.6
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
Accumulated amortization (7.9) (7.4)
Other    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 47.6 47.7
Accumulated amortization (27.0) (22.2)
Net carrying amount 20.6 25.5
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
Accumulated amortization $ (27.0) $ (22.2)