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Employee Compensation and Benefit Plans - Schedule of Change in Benefit Obligation, Plan Assets and Funded Status for Pension Plans (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Pension Plan    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Benefit obligation $ 18.2 $ 42.2
Fair value of plan assets 19.1 39.6
Unfunded status recognized in Other liabilities 0.9 (2.6)
Amounts recognized in Accumulated other comprehensive income (loss) 1.3 (1.0)
Gratuity Plan    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Benefit obligation 7.6 6.7
Fair value of plan assets 0.0 0.0
Unfunded status recognized in Other liabilities $ (7.6) $ (6.7)