Investment Securities - Qualified Affordable Housing Projects (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investments in Affordable Housing Projects [Abstract]
Investments in qualified affordable housing projects, net	$ 954	$ 616
Other liabilities	482	370
Tax credits and other tax benefits recognized	77	57	$ 35
Amortization expense included in provision for income taxes	$ 64	$ 44	$ 28

Amount of affordable housing tax credits and other tax benefits recognized.

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-Publisher FASB
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-Topic 323
-SubTopic 740
-Section 50
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Amount of investment in qualified affordable housing projects.

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Amount of amortization expense of investment in qualified affordable housing projects.

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Amount of commitment or contingent commitments to qualified affordable housing project investments.

+ References

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-Name Accounting Standards Codification
-Topic 323
-SubTopic 740
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