XML 76 R65.htm IDEA: XBRL DOCUMENT v3.24.3
Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Derivative [Line Items]            
Derivative Instruments and Hedges, Assets $ 194.3   $ 194.3   $ 193.3  
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease) 5.7   5.7   $ 6.7  
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax 3.0 $ (3.2) (2.8) $ (6.7)    
Interest Income, Hedge Basis Adjustment, Portfolio Layer Method, Increase (Decrease) 0.4          
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax (3.1) (2.1) (11.2) (4.1)    
Not Designated as Hedging Instrument            
Derivative [Line Items]            
Amount of net fee income recognized in other non-interest income 0.0   0.0      
Interest Rate Swap            
Derivative [Line Items]            
Derivative Instruments and Hedges, Assets 850.0   850.0      
Interest Rate Swap | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]            
Derivative [Line Items]            
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax (12.4) 13.1 10.1 27.2    
Interest Rate Collars            
Derivative [Line Items]            
Derivative Instruments and Hedges, Assets 300.0   300.0      
Interest Rate Floor [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]            
Derivative [Line Items]            
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax $ (3.1) $ (2.1) $ (11.2) $ (4.1)    
three-year forward starting, four-year pay fixed interest rate swap [Member]            
Derivative [Line Items]            
Derivative Instruments and Hedges, Assets           $ 200.0
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)           $ 8.5