v3.26.1
Short-Term Borrowings and Long-Term Debt - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
May 06, 2021
Jan. 31, 2014
5.75% Subordinated Notes, Due 2026      
Debt Instrument [Line Items]      
Interest rate 5.25%   5.25%
4.00% Subordinated Notes, Due 2031      
Debt Instrument [Line Items]      
Interest rate 4.00% 4.00%  
5.301% Senior Notes, Due February 2032      
Debt Instrument [Line Items]      
Interest rate   5.301%  
Interest rate on subordinated debentures 1.94%    
Debt instrument, term 5 years    
5.301% Senior Notes, Due February 2032 | Senior Notes      
Debt Instrument [Line Items]      
Debt instrument, face amount $ 400.0