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Borrowings - Senior and Subordinated Notes (Details) - Subordinated Debt - USD ($)
$ in Millions
Jun. 02, 2022
Jun. 01, 2020
5.25% notes maturing June 1, 2030    
Debt Instrument [Line Items]    
Issuance of debt   $ 125.0
Floating interest rate margin (as a percent)   5.11%
Duration of fixed interest rate   5 years
5.25% notes maturing June 1, 2030 | Base Rate    
Debt Instrument [Line Items]    
Interest rate   5.25%
5.000% notes due 2032    
Debt Instrument [Line Items]    
Issuance of debt $ 100.0  
Fixed to floating interest rate 5.00%  
Percentage of principal amount of notes 100.00%  
5.000% notes due 2032 | SOFR    
Debt Instrument [Line Items]    
Floating interest rate margin (as a percent) 2.52%