Mortgage Banking - Additional information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Mortgage Banking [Abstract]
Residential mortgage loans, unpaid balance	$ 2,890,000,000		$ 2,890,000,000
Expenses (credit) relating to secondary market buy-back activity	$ 0	$ 0