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Leases (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Leases (Details) [Line Items]      
Lessee, Operating Lease, Renewal Term 10 years    
Lessee, Operating Lease, Termination Period 1 year    
Operating Lease, Weighted Average Remaining Lease Term 2 years    
Operating Lease, Weighted Average Discount Rate, Percent 5.09%    
Operating Lease, Expense $ 10.3 $ 11.7  
Short-Term Lease And Variable Lease, Cost 2.0 2.0  
Sublease Income 2.2 0.8  
Operating Lease, Payments 11.4 11.1 $ 11.8
Lessor, Operating Lease, Lease Not yet Commenced, Assumption and Judgment, Value of Underlying Asset, Amount $ 0.1  
Minimum [Member]      
Leases (Details) [Line Items]      
Lessee, Operating Lease, Remaining Lease Term 1 year    
Maximum [Member]      
Leases (Details) [Line Items]      
Lessee, Operating Lease, Remaining Lease Term 5 years