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Leases And Other Commitments - Other Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
Operating cash flows from operating leases $ 18.3 $ 14.3
Operating cash flows from finance leases 0.7 0.8
Financing cash flows from finance leases 8.5 0.5
Right-of-use assets obtained in exchange for operating lease liabilities 33.5 80.6
Right-of-use assets obtained in exchange for finance lease liabilities $ 41.7 $ 15.5
Weighted average remaining lease term of operating leases 6 years 1 month 6 days 6 years 2 months 12 days
Weighted average remaining lease term of finance leases 23 years 3 months 18 days 13 years 3 months 18 days
Weighted average discount rate of operating leases (as a percent) 500.00% 500.00%
Weighted average discount rate of finance leases (as a percent) 520.00% 500.00%