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Leases (Tables)
 12 Months Ended
Dec. 31, 2021
Leases [Abstract]  
Summarized Information about Operating Leases
The following table summarizes information about the Company’s operating leases for the years ended December 31 (in millions):
20212020
Operating lease cost$11.2 $13.2 
Variable lease cost0.1 0.1 
Sublease income(0.5)$(0.2)
Total operating lease expense$10.8 $13.1 
Cash paid for amounts included in the measurement of lease liabilities:
    Operating cash flows from operating leases$11.1 $11.9 
ROU asset obtained in exchange for new operating lease liabilities
3.0 74.9 
Maturities of Operating Lease Liabilities
Maturities of operating lease liabilities were as follows (in millions):
Operating Leases
Year Ending December 31,
2022$6.2 
20238.6 
20248.0 
20257.7 
20267.6 
Thereafter56.4 
Total lease payments94.5 
   Less imputed interest(16.9)
Total$77.6