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Redeemable Noncontrolling Interests - Reconciliation of Noncontrolling Interests (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Noncontrolling Interest [Abstract]    
Net income attributable to nonredeemable noncontrolling interests $ 23.1 $ 19.7
Net income attributable to redeemable noncontrolling interests 2.4 2.0
Net income attributable to noncontrolling interests $ 25.5 $ 21.7