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Employee Compensation and Benefit Plans - Schedule of Stock Unit Activity (Footnote) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Units Reclassified From Liability-Classified Awards		436
Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	168,950	147,058	115,173
Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	421,074	373,614	236,593
Intrinsic value of stock units vested	$ 6.5	$ 2.2	$ 2.1
Total intrinsic value of stock units vested	$ 4.3	$ 2.5	$ 2.4
Unvested stock units (in shares)	756,938	603,889	416,226	261,647
Weighted average remaining contractual term of share units outstanding (years)	1 year 8 months 12 days
Market-based Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested stock units (in shares)	478,263
Net aggregate intrinsic value of stock awards outstanding	$ 8.6
Equity-Settled Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		57,187
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	89,664
Share-Based Payments Arrangement, Tranche Five | Market-based Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units with market condition not met, number	396,507
Over Three Years | Equity-Settled Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		5,641
Over Four Years | Equity-Settled Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		51,546

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