FINANCIAL INSTRUMENTS (Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative [Line Items]
Other income, net	$ 40	$ 77	$ 366	$ 74
Other Nonoperating Income (Expense)
Derivative [Line Items]
Hedged items (Long-term debt)	0	0	0	(68)
Other Nonoperating Income (Expense) | Fair Value Hedging
Derivative [Line Items]
Derivatives designated as hedging instruments	$ 0	$ 0	$ 0	$ 68