VARIABLE INTEREST ENTITIES - Income Statement Effect (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Provision for income taxes:
Amortization of LIHTC investments under proportional method	$ 4	$ 3	$ 11	$ 10
Low-income housing tax credits	(3)	(4)	(11)	(11)
Other tax benefits related to tax credit investments	(1)	0	(2)	(2)
Total impact on provision for income taxes	$ 0	$ (1)	$ (2)	$ (3)

Amortization Method Qualified Affordable Housing Project Investments, Low Income Housing Tax Credit

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Amortization Method Qualified Affordable Housing Project Investments, Other Tax Benefits Related to Tax Credit Investments

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Amortization Method Qualified Affordable Housing Project Investments, Provision For Income Tax

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Low Income Tax Credits, Provision For Income Taxes [Abstract]

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Proportional Amortization Method Qualified Affordable Housing Project Investments, Amortization

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