Regulatory Capital and Other Regulatory Matters (Details) $ in Millions	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Capital Requirements on Foreign Financial Institutions [Line Items]
Assets	$ 132,011	$ 122,545
Brazil
Capital Requirements on Foreign Financial Institutions [Line Items]
Capital ratio (as a percent)	0.291
International Regulated Bank and Finance Companies
Capital Requirements on Foreign Financial Institutions [Line Items]
Assets	$ 7,700	$ 5,800
Minimum | Brazil
Capital Requirements on Foreign Financial Institutions [Line Items]
Capital requirement (as a percent)	0.105