COMMITMENTS AND CONTINGENT LIABILITIES - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Maturity period of majority of standby letters of credit	two years
Maturity period of Commercial letters of credit	90 days
Standby letters of credit
Loss Contingencies [Line Items]
Carrying amount of deferred revenue associated with guarantees	$ 5	$ 8
Outstanding standby letters of credit	570	$ 587
Maximum
Loss Contingencies [Line Items]
Aggregate range of reasonably possible losses current legal proceedings	10
Minimum
Loss Contingencies [Line Items]
Aggregate range of reasonably possible losses current legal proceedings	$ 0