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Contingent Acquisition Obligations (Details) $ in Millions | Dec. 31, 2019 USD ($)
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Deferred acquisition payments |
Business Acquisition, Contingent Consideration [Line Items] |
Future contingent acquisition obligation due in 2018 | $ 45.7
Future contingent acquisition obligation due in 2019 | 30.4
Future contingent acquisition obligation due in 2020 | 7.4
Future contingent acquisition obligation due in 2021 | 4.4
Future contingent acquisition obligation due in 2022 | 2.4
Future contingent acquisition obligation due thereafter | 0.0
Future contingent acquisition obligation due, total | 90.3
Redeemable noncontrolling interests and call options with affiliates |
Business Acquisition, Contingent Consideration [Line Items] |
Future contingent acquisition obligation due in 2018 | 26.2
Future contingent acquisition obligation due in 2019 | 37.9
Future contingent acquisition obligation due in 2020 | 32.4
Future contingent acquisition obligation due in 2021 | 6.2
Future contingent acquisition obligation due in 2022 | 2.5
Future contingent acquisition obligation due thereafter | 0.2
Future contingent acquisition obligation due, total | 105.4
Redeemable at noncontrolling equity owners discretion |
Business Acquisition, Contingent Consideration [Line Items] |
Future contingent acquisition obligation due in 2018 | 21.5
Total contingent acquisition payments |
Business Acquisition, Contingent Consideration [Line Items] |
Future contingent acquisition obligation due in 2018 | 71.9
Future contingent acquisition obligation due in 2019 | 68.3
Future contingent acquisition obligation due in 2020 | 39.8
Future contingent acquisition obligation due in 2021 | 10.6
Future contingent acquisition obligation due in 2022 | 4.9
Future contingent acquisition obligation due thereafter | 0.2
Future contingent acquisition obligation due, total | $ 195.7

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