Debt - Summary of Long-Term Debt - Principal (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Finance lease obligations, maturing through 2024	$ 47.4	$ 52.6
Other debt	7.8	8.1
Long-term debt, gross	1,885.9	1,888.2
Less: Original issue discount and debt issuance costs classified as a reduction to long-term debt	(18.7)	(20.0)
Less: Current portion	(87.4)	(76.1)
Long-term debt, less original issue discount and current maturities	1,779.8	1,792.1
Revolver
Debt Instrument [Line Items]
Long-term debt	44.0	30.0
Term Loan B
Debt Instrument [Line Items]
Long-term debt	1,361.7	1,372.5
Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 425.0	$ 425.0

Amount of short-term and long-term debt and lease obligation.

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Amount, after accumulated amortization, of debt discount.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt classified as other.

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