DERIVATIVES - Net Investment Hedges (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net investment hedges \| Foreign currency translation adjustment
Derivative gain (losses)
Gain (loss) recognized in AOCI	$ 700	$ (450)	$ 831	$ 882

Amount before tax and reclassification adjustments of other comprehensive income (loss).

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