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Leases Leases Supplemental Balance Sheet Information (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Leases [Abstract]    
Operating Lease, Right-of-Use Asset $ 20.5 $ 35.8
Current lease liability $ 10.0 $ 15.7
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Accrued liabilities and other Accrued liabilities and other
Long-term lease liability $ 12.5 $ 21.6
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Other Liabilities, Noncurrent Other Liabilities, Noncurrent
Total operating lease liabilities $ 22.5 $ 37.3
Weighted-average remaining lease term (in years) 4 years 9 months 18 days 4 years 3 months 18 days
Weighted-average discount rate (1) 7.27% 8.24%