Investment Securities - Additional Information (Details)	3 Months Ended
	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) security	Dec. 31, 2021 USD ($)
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Accrued interest receivable		$ 61,002,000	$ 45,242,000
Reclassification of fair value from available of sale investment securities to held to maturity investment securities	$ 1,300,000,000
Reclassified unrealized after-tax losses	176,700,000
Gains or Losses recognized at Reclassification	$ 0
Carrying Value Of Investment Securities Pledged		$ 4,100,000,000	2,900,000,000
Number of available for sale debt securities in unrealized loss positions | security		402
Available-for-sale Securities
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Accrued interest receivable		$ 11,700,000	8,400,000
Held-to-maturity Securities
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Accrued interest receivable		$ 9,200,000	$ 8,200,000