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Leases (Tables)
 9 Months Ended
Sep. 30, 2023
Leases [Abstract]  
Schedule of Components of Lease Expense
The components of lease expense were as follows: 
Three Months Ended September 30,Nine Months Ended September 30,
2023202220232022
Operating lease cost:
Amortization of right-of-use assets$1.1 $1.4 $3.1 $4.2 
Interest on lease liabilities0.2 0.3 0.6 0.8 
Total operating lease cost$1.3 $1.7 $3.7 $5.0 
Schedule of Leases Supplemental Balance Sheets
Supplemental balance sheet information related to lessee activities is as follows:
LeasesClassificationSeptember 30, 2023December 31, 2022
Operating lease right-of-use assetsOther assets$17.1 $19.4 
Operating lease liabilities, current portionOther current liabilities$3.5 $5.8 
Operating lease liabilitiesOther liabilities14.6 14.8 
Total operating lease liabilities$18.1 $20.6 
Operating leases:
Weighted average remaining lease term (years)6.35.9
Weighted average discount rate5.2 %4.1 %