Derivatives and Hedging Activities - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Sep. 30, 2022
Derivative [Line Items]
Derivative liability, notional amount	$ 2,295,700,000	$ 2,449,000,000
Derivative, Collateral, Right to Reclaim Securities	0	0
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	9,100,000
Derivative Instruments and Hedges, Assets	193,300,000	191,900,000
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	6,700,000	8,100,000
Derivative Instruments and Hedges, Noncurrent	900,000,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	6,500,000	2,200,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	(7,500,000)
Interest Income, Hedge Basis Adjustment, Portfolio Layer Method, Increase (Decrease)	1,400,000
Three-Year Forward Starting, Four-Year Pay Fixed Interest Rate Swap
Derivative [Line Items]
Derivative Instruments and Hedges, Assets			$ 200,000,000
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)			$ 8,500,000
Two-Year Forward Starting, Three-year Pay Fixed Interest Rate Swap
Derivative [Line Items]
Derivative Instruments and Hedges, Assets	500,000,000
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	23,300,000
Interest Rate Collars
Derivative [Line Items]
Derivative Instruments and Hedges, Assets	300,000,000
Interest Rate Swap
Derivative [Line Items]
Derivative, Collateral, Right to Reclaim Securities	0	$ 0
Derivative Instruments and Hedges, Assets	850,000,000
Interest Rate Swap and Interest Rate Collar
Derivative [Line Items]
Derivative Instruments and Hedges, Assets	1,150,000,000
Collateral Pledged
Derivative [Line Items]
Derivative, Fair Value, Net	0
Derivative, Collateral, Right to Reclaim Securities	$ 0