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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Net unrealized gain (loss) on interest rate risk management activities, net of tax:    
Unrealized gain (loss) arising during the period, tax (benefit) provision $ (9.4) $ 9.7
Tax provision of reclassification adjustment $ 0.7 $ 0.2