FINANCIAL INSTRUMENTS (Summary of Fair Value of Financial Instruments) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Cash Equivalents, at Carrying Value	$ 806	$ 1,464
Cash Equivalents, Accumulated Gross Unrealized Loss, Before Tax	0	0
Cash Equivalents, Accumulated Gross Unrealized Loss, Before Tax	0	0
Cash Equivalents, Fair Value	806	1,464
Total, Amortized Cost	1,997	1,495
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	110	154
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(48)	(15)
Debt Securities, Available-for-sale	2,059	1,634
Equity securities	20	40
Other Investments and Securities, at Cost	2,004	1,501
Other Investments and Securities, Accumulated Gross Unrealized Gain, Before Tax	123	188
Other Investments and Securities, Accumulated Gross Unrealized Loss, Before Tax	(48)	(15)
Cash Equivalents, Marketable Securities and Other Investments, Amortized Cost Basis	3,047	3,010
Cash Equivalents, Marketable Securities and Other Investments, Accumulated Gross Unrealized Gain, Before Tax	131	188
Cash Equivalents, Marketable Securities and Other Investments, Accumulated Gross Unrealized Loss, Before Tax	(48)	(15)
Cash Equivalents, Marketable Securities and Other Investments, Fair Value	3,130	3,183
Long-term Debt	(14,511)	(16,951)
Long Term Debt, Accumulated Gross Unrealized Gain, Before Tax	27	6
Long Term Debt, Accumulated Gross Unrealized Loss, Before Tax	(2,641)	(3,659)
Long-term debt	(17,125)	(20,604)
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax	189	173
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax	(250)	(350)
Derivative Assets (Liabilities), at Fair Value, Net	(61)	(177)
Long Term Debt, Accumulated Fair Value Adjustment	47	69
Derivative, Amount of Hedged Item	2,279	3,314
Investments carried at fair value	2,079	1,674
Interest rates 6
Debt Securities, Available-for-sale [Line Items]
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax	1	41
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax	(140)	(182)
Derivative Assets (Liabilities), at Fair Value, Net	(139)	(141)
Foreign currency
Debt Securities, Available-for-sale [Line Items]
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax	46	69
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax	(18)	(84)
Derivative Assets (Liabilities), at Fair Value, Net	28	(15)
Commodities
Debt Securities, Available-for-sale [Line Items]
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax	142	63
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax	(92)	(84)
Derivative Assets (Liabilities), at Fair Value, Net	50	(21)
Government debt
Debt Securities, Available-for-sale [Line Items]
Total, Amortized Cost	746	673
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	17	35
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(28)	(10)
Debt Securities, Available-for-sale	735	698
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Total, Amortized Cost	1,251	822
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	93	119
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(20)	(5)
Debt Securities, Available-for-sale	1,324	936
Equity securities
Debt Securities, Available-for-sale [Line Items]
Equity Securities, Accumulated Gross Unrealized Gain, Before Tax	13	34
Equity Securities, Accumulated Gross Unrealized Loss, Before Tax	0	0
Available-for-sale Equity Securities, Amortized Cost Basis	7	6
Equity securities	20	40
Held-to-maturity Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Cash Equivalents, at Carrying Value	317	980
Cash Equivalents, Accumulated Gross Unrealized Loss, Before Tax	0	0
Cash Equivalents, Accumulated Gross Unrealized Loss, Before Tax	0	0
Cash Equivalents, Fair Value	317	980
Money Market Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Cash Equivalents, at Carrying Value	489	484
Cash Equivalents, Accumulated Gross Unrealized Loss, Before Tax	0	0
Cash Equivalents, Accumulated Gross Unrealized Loss, Before Tax	0	0
Cash Equivalents, Fair Value	489	484
Marketable securities 2
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis, Current	237	45
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, Current, before Tax	8	0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, Current, before Tax	0	0
Debt Securities, Available-for-sale, Current	$ 245	$ 45