XML 141 R127.htm IDEA: XBRL DOCUMENT v3.22.0.1
Shareholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Nov. 01, 2021
Aug. 20, 2021
Jul. 22, 2021
Nov. 11, 2020
May 19, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Business Acquisition Equity Interests Issued Or Issuable [Line Items]                
Number of shares authorized to be repurchased           10,800,000    
Purchase of treasury stock           $ 172.7 $ 58.3  
Treasury stock acquired, Shares,           2,500,000 1,700,000  
Treasury Stock Acquired, Average Cost Per Share           $ 69.53 $ 33.35  
Common stock reissued           2,600,000 1,600,000  
Preferred stock, dividend rate percentage       50.00%        
Preferred stock, par value           $ 1.00 $ 1.00 $ 1.00
Non-Cumulative Perpetual Preferred Stock, Series C [Member]                
Business Acquisition Equity Interests Issued Or Issuable [Line Items]                
Issuance of preferred stock         $ 225.0      
Preferred stock, dividend rate percentage         6.125%      
Preferred stock, par value         $ 1.00      
Preferred stock liquidation preference per depositary share         25      
Preferred stock, liquidation preference per share         $ 25,000.00      
Preferred stock, redemption terms           The Company may redeem the Series C preferred stock at its option, subject to regulatory approval, on or after June 15, 2025.    
Series C Preferred Stock [Member] | Over-Allotment Option [Member]                
Business Acquisition Equity Interests Issued Or Issuable [Line Items]                
Issuance of preferred stock         $ 25.0      
Non Cumulative Perpetual Series D Preferred Stock [Member]                
Business Acquisition Equity Interests Issued Or Issuable [Line Items]                
Preferred stock, dividend rate percentage     4.50%          
Preferred stock, par value     $ 1.00          
Preferred stock liquidation preference per depositary share     25          
Preferred stock, liquidation preference per share     $ 25,000.00          
Preferred stock, redemption terms           The Company may redeem the Series D preferred stock at its option, subject to regulatory approval, on or after August 15, 2026.    
Underwritten registered public offering     $ 300.0          
Non Cumulative Perpetual Series A Preferred Stock [Member]                
Business Acquisition Equity Interests Issued Or Issuable [Line Items]                
Preferred stock, dividend rate percentage   6.25%            
Preferred stock redemption price per depositary share   $ 25.00            
Vining Sparks [Member]                
Business Acquisition Equity Interests Issued Or Issuable [Line Items]                
Common stock reissued 1,200,000