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Leases - Maturities of Operating Lease Liabilities (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Period Ending December 31, 2019  
2020 $ 133.8
2021 102.7
2022 78.7
2023 54.1
2024 38.6
Thereafter 96.0
Total future undiscounted lease payments 503.9
Less imputed interest (45.1)
Total operating lease liabilities $ 458.8