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Leases (Cash Flow) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Cash paid for amounts included in the measurement of liabilities    
Operating cash flows from operating leases $ 91.4 $ 86.9
Operating cash flows from finance leases 25.8 22.2
Financing cash flows from finance leases 7.4 8.1
Leased assets obtained in exchange for new finance lease liabilities 50.2 108.0
Leased assets obtained in exchange for new operating lease liabilities $ 78.5 $ 24.8