v3.25.4

Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Average notional amount	$ 17,967,167,000	$ 13,025,485,000	$ 1,923,988,000
Total available-for-sale securities	6,514,471,000	7,371,711,000
Mortgage servicing rights, at fair value	2,421,910,000	2,994,271,000	3,052,016,000	$ 2,984,937,000
Derivative assets, at fair value	87,549,000	10,114,000
Derivative liabilities, at fair value	$ 4,254,000	24,897,000
Warehouse Lines of Credit
Derivative Instruments, Gain (Loss) [Line Items]
Weighted average remaining maturities	60 days
Interest-Only-Strip
Derivative Instruments, Gain (Loss) [Line Items]
Total available-for-sale securities	$ 9,000,000.0	16,500,000
Interest Rate Contract
Derivative Instruments, Gain (Loss) [Line Items]
Net interest income on interest rate swaps	24,700,000	58,500,000	21,400,000
Average notional amount	17,100,000,000	14,100,000,000	8,000,000,000.0
Interest rate lock commitments
Derivative Instruments, Gain (Loss) [Line Items]
Average notional amount	38,238,000	25,879,000	0
Notional	49,600,000	18,300,000
Net carrying value	$ 900,000	100,000
Interest rate lock commitments \| Minimum
Derivative Instruments, Gain (Loss) [Line Items]
Funding or cancellation or expiration of lock commitment	30 days
Interest rate lock commitments \| Maximum
Derivative Instruments, Gain (Loss) [Line Items]
Funding or cancellation or expiration of lock commitment	90 days
Pull-through rate
Derivative Instruments, Gain (Loss) [Line Items]
Notional	$ 37,700,000	15,500,000
Forward mortgage loan sale commitments
Derivative Instruments, Gain (Loss) [Line Items]
Average notional amount	7,437,000	25,900,000	$ 0
Notional	0	20,400,000
Net carrying value		200,000
TBAs (pipeline)
Derivative Instruments, Gain (Loss) [Line Items]
Notional		$ 0
Net carrying value	125,000
TBAs (pipeline) \| Sale contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional	$ 35,000,000.0

Average notional amount during the period presented specified by the derivative(s).

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