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Commitments and Contingencies - Purchase Obligations and Non-Cancellable Operating Leases (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Purchase Obligations  
2020 $ 86.3
2021 3.3
2022 0.2
2023 0.2
2024 0.2
Thereafter 0.0
Total obligations $ 90.2