FINANCIAL INSTRUMENTS, DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Summary of Gains and Losses on Derivative Instruments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Other comprehensive income (loss), cash flow hedge and net investment hedge, gain (loss), before reclassification, tax	$ (34)	$ 32	$ (92)
Other comprehensive income (loss), reclassification adjustment from AOCI, cash flow hedges and net investment hedges, net of tax	4
Amount reclassified to earnings during the year		(12)	(8)
Gain (loss) recognized in income, fair value hedges		4	3
Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Other comprehensive income (loss), net investment hedge, gain (loss), before reclassification and tax	0
Other comprehensive income (loss), unrealized gain (loss) on derivatives arising during period, net investment hedge, before tax		0	0
Interest rate contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income, fair value hedges	0	(4)	(3)
Foreign exchange contract | Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income, undesignated derivative instruments	(17)	0	(37)
Cash Flow Hedges | Interest rate contract
Derivative Instruments, Gain (Loss) [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification, tax	(37)
Gain (loss) recognized in OCI		(3)	(3)
Cash Flow Hedges | Interest rate contract | Net Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification, before tax	0
Gain (loss) reclassified from AOCI into income		0	0
Cash Flow Hedges | Foreign exchange contract
Derivative Instruments, Gain (Loss) [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification, tax	(9)
Gain (loss) recognized in OCI		3	(24)
Cash Flow Hedges | Foreign exchange contract | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification, before tax	4
Gain (loss) reclassified from AOCI into income		(12)	(8)
Net investment hedge
Derivative Instruments, Gain (Loss) [Line Items]
Other comprehensive income (loss), net investment hedge, gain (loss), before reclassification and tax	$ 12
Other comprehensive income (loss), unrealized gain (loss) on derivatives arising during period, net investment hedge, before tax		$ 32	$ (65)