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Commitments and Contingencies Commitments and Contingencies - Purchase Commitments (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2020 $ 794.3
2021 230.7
2022 220.1
2023 226.4
Thereafter 0.0
Total $ 1,471.5