Regulatory Capital and Other Regulatory Matters (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Capital Requirements on Foreign Financial Institutions [Line Items]
Assets	$ 142,680	$ 141,030
International Regulated Bank and Finance Companies
Capital Requirements on Foreign Financial Institutions [Line Items]
Assets	$ 8,700	$ 7,500

Amount of asset recognized for present right to economic benefit.

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+ Details