Derivative Instruments - Impact on Statements of Income, Net Investment Hedges (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Gains/(losses) recorded in income and other comprehensive income/(loss)
Net pre-tax gains reclassified related to liquidation of legal entity	$ (8)
Other Income
Gains/(losses) recorded in income and other comprehensive income/(loss)
Net pre-tax gains reclassified related to liquidation of legal entity			$ 6
Unrealized gains/(losses) on investment securities \| Other Income
Gains/(losses) recorded in income and other comprehensive income/(loss)
Net pre-tax gains reclassified related to liquidation of legal entity	38	$ 0	3
Net Investment Hedging \| Foreign exchange contracts
Gains/(losses) recorded in income and other comprehensive income/(loss)
Amounts recorded in income	(123)	(228)	(122)
Amounts recorded in OCI	$ 3,591	$ 2,452	$ (1,408)

Net investment hedge gains and losses.

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Amount of gain (loss) from excluded component of derivative hedge, recognized in earnings. Excludes recognition under systematic and rational method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 20
-Section 45
-Paragraph 1A
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-URI https://asc.fasb.org/extlink&oid=121577181&loc=SL110061172-113977

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- Definition

Amount before tax of reclassification adjustment from accumulated other comprehensive income for translation gain (loss) realized upon the sale or liquidation of an investment in a foreign entity and foreign currency hedges that are designated and qualified as hedging instruments for hedges of the foreign currency exposure of a net investment in a foreign operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount, before tax and reclassification, of gain (loss) from derivative designated and qualifying as net investment hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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