FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Debt) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Short-term Bank Loans and Notes Payable	$ 167		$ 176
Current portion of long-term debt	1,500		2,000
Other Short-term Borrowings	110		164
Bank drafts and short-term borrowings	1,777		2,340
Debt Instrument, Face Amount	44,646		48,711
Adjustments to Principal Value, Unamortized basis adjustment from swap terminations	137		149
Debt Instrument, Unamortized Discount	(287)		(303)
Debt Instrument, Unamortized Premium	1,495		1,755
Total Debt	46,005		50,336
Long-term debt	44,505		48,336
Long-term debt, fair value	50,300		58,500
Interest payments	435	$ 491
Line of Credit Facility, Maximum Borrowing Capacity	$ 6,000
Number of Revolving Credit Facilities	4
Payment for Debt Extinguishment or Debt Prepayment Cost	$ 4,000
Unrealized Gain (Loss) on Investments	381	(228)
Gain (Loss) on Extinguishment of Debt	281	$ 0
Extinguishment of Debt, Amount	3,500
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative Liability	14		$ 24
2.875% Senior Notes due 2021
Debt Instrument [Line Items]
Debt Instrument, Face Amount	500
$2 Billion Maximum Borrowing Capacity
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	2,000
$1 Billion Maximum Borrowing Capacity
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	1,000
$1.5 Billion Maximum Borrowing Capacity
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,500