Investment Securities - Narrative (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026 USD ($) security	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) security	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Reclassification of held-to-maturity debt securities	$ 2,300,000
Net loss on sale of securities	(251,300)	$ 0	$ (251,300)	$ 0
Reinvested proceeds	1,700,000
AFS securities pledged as collateral	694,900		694,900
Allowance for credit loss	$ (3,250)		$ (3,250)		$ (775)
Number of corporate debt security classified as AFS \| security	1		1
Securities transferred to AFS \| security			2
Unrealized losses	$ (5,400)
ACL on HTM securities	$ 0		$ 0		$ 695

Debt Securities, Available-for-Sale, Allowance for Credit Loss, Number Of Securities

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