Derivatives - Schedule of Fair Values of Derivatives on the Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Assets	$ 0.0	$ 1.4
Liabilities	88.7	39.5
Interest rate swaps
Derivatives, Fair Value [Line Items]
Liabilities	87.0	36.6
Foreign currency contracts
Derivatives, Fair Value [Line Items]
Assets	0.0	1.4
Liabilities	1.7	2.9
Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Assets	0.0	1.4
Liabilities	1.7	39.5
Derivatives not designated as hedging instruments | Other current liabilities | Interest rate swaps
Derivatives, Fair Value [Line Items]
Assets	0.0	0.0
Liabilities	0.0	3.5
Derivatives not designated as hedging instruments | Other current liabilities | Foreign currency contracts
Derivatives, Fair Value [Line Items]
Assets	0.0	0.0
Liabilities	1.7	2.9
Derivatives not designated as hedging instruments | Other non-current liabilities | Interest rate swaps
Derivatives, Fair Value [Line Items]
Assets	0.0	0.0
Liabilities	0.0	33.1
Derivatives not designated as hedging instruments | Other current assets | Foreign currency contracts
Derivatives, Fair Value [Line Items]
Assets	0.0	1.4
Liabilities	0.0	0.0
Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Assets	0.0	0.0
Liabilities	87.0	0.0
Derivatives designated as hedging instruments | Other current liabilities | Interest rate swaps
Derivatives, Fair Value [Line Items]
Assets	0.0	0.0
Liabilities	22.6	0.0
Derivatives designated as hedging instruments | Other non-current liabilities | Interest rate swaps
Derivatives, Fair Value [Line Items]
Assets	0.0	0.0
Liabilities	$ 64.4	$ 0.0