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Contingencies, Commitments and Guarantees (Tables)
 12 Months Ended
Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]  
Schedule of aggregate minimum lease commitments under operating leases Aggregate minimum lease commitments on an undiscounted basis for the Company's operating leases (including short-term leases) as of December 31, 2022 were as follows:
(Amounts in thousands) 
2023$25,155 
202423,804 
202522,944 
202620,858 
202716,983 
Thereafter29,249 
Total$138,993 
Schedule of operating lease costs and sublease income
The following table summarizes the Company's operating lease costs and sublease income:
Year Ended December 31,
(Amounts in millions)202220212020
Operating lease costs$24.3 $20.7 $21.9 
Operating lease costs related to short-term leases1.3 0.9 0.8 
Sublease income0.4 0.7 1.8