DERIVATIVE INSTRUMENTS AND HEDGING TRANSACTIONS (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Notional	$ 18,967,000,000	$ 21,273,000,000
Fair Value Asset	325,000,000	396,000,000
Fair Value (Liability)	(171,000,000)	(200,000,000)
Foreign Exchange Forward [Member]
Derivative [Line Items]
Amount of hedged item	4,235,000,000	4,414,000,000
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional	5,564,000,000	6,444,000,000
Fair Value Asset	164,000,000	304,000,000
Fair Value (Liability)	(8,000,000)	(109,000,000)
Designated as Hedging Instrument [Member] \| Derivatives in Fair Value Hedging Relationships [Member] \| Interest Rate Swap [Member]
Derivative [Line Items]
Notional	3,150,000,000	3,950,000,000
Fair Value Asset	100,000,000	194,000,000
Fair Value (Liability)	0	0
Designated as Hedging Instrument [Member] \| Derivatives in Cash Flow Hedging Relationships [Member] \| Foreign currency exchange contracts [Member]
Derivative [Line Items]
Notional	422,000,000	488,000,000
Fair Value Asset	15,000,000	65,000,000
Fair Value (Liability)	0	(58,000,000)
Designated as Hedging Instrument [Member] \| Derivatives in Net Investment Hedging Relationships [Member] \| Foreign currency exchange contracts [Member]
Derivative [Line Items]
Notional	792,000,000	806,000,000
Fair Value Asset	49,000,000	45,000,000
Fair Value (Liability)	(3,000,000)	(1,000,000)
Designated as Hedging Instrument [Member] \| Derivatives in Net Investment Hedging Relationships [Member] \| Cross Currency Interest Rate Contract [Member]
Derivative [Line Items]
Notional	1,200,000,000	1,200,000,000
Fair Value Asset	0	0
Fair Value (Liability)	(5,000,000)	(50,000,000)
Not Designated as Hedging Instrument [Member] \| Foreign currency exchange contracts [Member]
Derivative [Line Items]
Notional	13,403,000,000	14,829,000,000
Fair Value Asset	161,000,000	92,000,000
Fair Value (Liability)	$ (163,000,000)	$ (91,000,000)

Amount of hedged item in hedging relationship. Excludes hedged asset or liability.

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Nominal or face amount used to calculate payment on derivative.

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