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Derivatives and Hedging Activities - Pre-tax Effect of Derivatives on AOCI and Statement of Operations (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]      
Amortization of accumulated OCI related $ 14.0 $ 0.0 $ 0.0
Derivatives not designated as hedging instruments | Other income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]      
Gain recognized in income 0.1 0.0 0.0
Derivatives in cash flow hedging relationships      
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]      
(Gain) loss recognized in OCI (effective portion) (4.8) 30.5 35.8
Derivatives in cash flow hedging relationships | Interest expense, net      
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]      
Gain recognized in income $ 24.7 $ 20.2 $ 7.5