Allowance for Credit Losses - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($) scenario	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) scenario	Sep. 30, 2021 USD ($)	Jun. 30, 2022 scenario
Measurement of ECL Measurements [Line Items]
Number of updated forward-looking economic scenarios	4		4		5
Charge-off of accrued interest receivables | $	$ 0	$ 1	$ 1	$ 3
Minimum
Measurement of ECL Measurements [Line Items]
Number of forward-looking economic scenarios	4		4