Affordable Housing Partnership, Tax Credit and Community Reinvestment Act Investments, Net - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Dec. 31, 2024
Investments in Tax Credit and Other Investments, Net [Line Items]
Minimum compliance period for qualified affordable housing partnerships to fully utilize the tax credits (in years)	15 years
Investments in Tax Credit and Other Investments and Other Assets
Investments in Tax Credit and Other Investments, Net [Line Items]
Equity securities without readily determinable fair values	$ 151	$ 147

Amount of investment in equity security without readily determinable fair value.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 321
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479536/321-10-50-3

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