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Other Compensation Liabilities
 12 Months Ended
Dec. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Other Compensation Liabilities Other Compensation Liabilities
Other compensation liabilities consisted of the following at December 31 (in millions):
 20252024
Share-based payments liability (Note 18)
$37.0 $25.4 
Profit interests compensation liability54.0 18.7 
Voluntary deferral plan liability (Note 17)
37.9 48.4 
Total other compensation liabilities$128.9 $92.5 
Profit interests compensation expense amounted to $38.0 million in 2025, $19.0 million in 2024, and $0.0 million in 2023. Redemptions of profit sharing interests from Acadian LLC key employees for cash were $2.7 million in 2025, $0.3 million in 2024, and $0.0 million in 2023.