v3.26.1
Shareholders' Equity (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Jun. 30, 2026
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Sep. 19, 2022
Stock Repurchase Program          
Shareholders' Equity [Line Items]          
Common stock repurchase authorized amount     $ 1,500.0    
Share repurchase program, increased authorized, amount       $ 1,000.0  
Number of shares repurchased (in shares)   7,305,646 20,269,450    
Stock purchases   $ 208.7 $ 208.3    
Share repurchase program, remaining authorized, amount $ 681.7 681.7      
Stock Repurchase Program | Common Stock          
Shareholders' Equity [Line Items]          
Number of shares repurchased (in shares) 413,183        
Cowen | At-the-Market Equity Offering Program          
Shareholders' Equity [Line Items]          
Common shares aggregate offering price authorized         $ 400.0
Common shares aggregate offering price authorized, remaining capacity available $ 400.0 $ 400.0