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Contingent Acquisition Obligations (Details)
$ in Millions
Dec. 31, 2022
USD ($)
Deferred acquisition payments  
Business Acquisition, Contingent Consideration [Line Items]  
Future contingent acquisition obligation due in 2018 $ 18.7
Future contingent acquisition obligation due in 2019 3.1
Future contingent acquisition obligation due in 2020 0.0
Future contingent acquisition obligation due in 2021 0.1
Future contingent acquisition obligation due in 2022 0.0
Future contingent acquisition obligation due thereafter 0.0
Future contingent acquisition obligation due, total 21.9
Redeemable noncontrolling interests and call options with affiliates  
Business Acquisition, Contingent Consideration [Line Items]  
Future contingent acquisition obligation due in 2018 9.5
Future contingent acquisition obligation due in 2019 1.2
Future contingent acquisition obligation due in 2020 16.0
Future contingent acquisition obligation due in 2021 0.0
Future contingent acquisition obligation due in 2022 24.3
Future contingent acquisition obligation due thereafter 0.0
Future contingent acquisition obligation due, total 51.0
Redeemable at noncontrolling equity owners discretion  
Business Acquisition, Contingent Consideration [Line Items]  
Future contingent acquisition obligation due in 2018 4.1
Total contingent acquisition payments  
Business Acquisition, Contingent Consideration [Line Items]  
Future contingent acquisition obligation due in 2018 28.2
Future contingent acquisition obligation due in 2019 4.3
Future contingent acquisition obligation due in 2020 16.0
Future contingent acquisition obligation due in 2021 0.1
Future contingent acquisition obligation due in 2022 24.3
Future contingent acquisition obligation due thereafter 0.0
Future contingent acquisition obligation due, total $ 72.9