Allowance for Credit Losses - Forecasted Economic Scenarios (Details)	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Forecast, Quarter ended December 31, 2024
Measurement of ECL Measurements [Line Items]
Unemployment rate (quarterly average) (in percent)	4.30%	4.10%	4.30%
GDP growth rate (year-over-year) (in percent)	1.60%	1.80%	1.10%
Forecast, Quarter ended June 30, 2025
Measurement of ECL Measurements [Line Items]
Unemployment rate (quarterly average) (in percent)	4.40%	4.10%	4.20%
GDP growth rate (year-over-year) (in percent)	1.40%	1.70%	1.80%
Forecast, Quarter ended December 31, 2025
Measurement of ECL Measurements [Line Items]
Unemployment rate (quarterly average) (in percent)	4.30%	4.10%	4.10%
GDP growth rate (year-over-year) (in percent)	2.00%	1.70%	2.10%