Investment Securities - Narrative (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) security	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Debt Securities, Available-for-sale [Line Items]
Equity securities without readily determinable fair values	$ 60,000,000	$ 43,800,000
Upward adjustments of equity securities without readily determinable fair values	0	0	$ 0
Downward adjustments of equity securities without readily determinable fair values	0	0	0
Impairment of equity securities without readily determinable fair values	688,000	12,158,000	2,415,000
Income tax expense (benefit)	222,455,000	190,873,000	171,645,000
Pledged securities	$ 6,900,000,000	2,800,000,000
Number of securities by a single non-government sponsored issuer exceeding 10% of shareholders' equity | security	0
Investment securities
Debt Securities, Available-for-sale [Line Items]
Income tax expense (benefit)	$ 403,000	$ (5,400,000)	$ (282,000)