Contingencies - Summary of Changes in ACL on Off-Balance Sheet Credit Exposures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Balance at beginning of period	$ 34,841	$ 32,949	$ 36,838	$ 35,623
PCL, off-balance sheet credit exposures	104	(1,326)	(1,893)	(4,000)
Balance at end of period	$ 34,945	$ 31,623	$ 34,945	$ 31,623