Disposal Group, Including Discontinued Operation, Foreign Currency Translation Gains (Losses), Net Of Taxes

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- Definition

Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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- Definition

Amount of foreign currency translation gain (loss) in the disposal group, including discontinued operation, recognized in the statement of income as a result of the sale or complete or substantially complete liquidation of an investment in a foreign entity.

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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DISCONTINUED OPERATIONS, SIGNIFICANT DISPOSALS AND OTHER BUSINESS EXITS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	15 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Dec. 31, 2022
Australia Consumer Banking Business \| Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pretax loss on sale of business	$ 680	$ 680
Loss on sale of business, after-tax	580	580
Loss on sale of business, foreign currency translation adjustments	625	625
Loss on sale of business, foreign currency translation adjustments, after-tax	$ 475	$ 475
Citibank Korea Inc. \| Employee Severance \| Forecast \| Minimum
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Voluntary termination benefits and related costs			$ 1,200
Citibank Korea Inc. \| Employee Severance \| Forecast \| Maximum
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Voluntary termination benefits and related costs			$ 1,500