FINANCIAL INSTRUMENTS Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Investment [Line Items]
Cash Equivalents, at Carrying Value	$ 501		$ 501		$ 566
Cash Equivalents, Accumulated Gross Unrealized Gain, Before Tax	0		0		0
Cash Equivalents, Accumulated Gross Unrealized Loss, Before Tax	0		0		0
Cash Equivalents, Fair Value	501		501		566
Available-for-sale Debt Securities, Amortized Cost Basis, Current	11		11		100
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, Current, before Tax	0		0		0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, Current, before Tax	0		0		0
Debt Securities, Available-for-sale, Current	11		11		100
Debt Securities, Available-for-sale, Amortized Cost	1,602		1,602		1,740
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	112		112		29
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	24		24		86
Debt Securities, Available-for-sale	1,690		1,690		1,683
Equity Securities, Amortized Cost Basis	13		13		16
Equity Securities, Accumulated Gross Unrealized Gain, Before Tax	7		7		1
Equity Securities, Accumulated Gross Unrealized Loss, Before Tax	(1)		(1)		(1)
Equity Securities, Fair Value	19		19		16
Other Investments and Securities, at Cost	1,615		1,615		1,756
Other Investments and Securities, Accumulated Gross Unrealized Gain, Before Tax	119		119		30
Other Investments and Securities, Accumulated Gross Unrealized Loss, Before Tax	25		25		87
Other Investments	1,709		1,709		1,699
Cash Equivalents, Marketable Securities and Other Investments, Amortized Cost Basis	2,127		2,127		2,422
Cash Equivalents, Marketable Securities and Other Investments, Accumulated Gross Unrealized Gain, Before Tax	119		119		30
Cash Equivalents, Marketable Securities and Other Investments, Accumulated Gross Unrealized Loss, Before Tax	25		25		87
Cash Equivalents, Marketable Securities and Other Investments, Fair Value	2,221		2,221		2,365
Long-term Debt	17,591		17,591		19,591
Long Term Debt, Accumulated Gross Unrealized Gain, Before Tax	4		4		351
Long Term Debt, Accumulated Gross Unrealized Loss, Before Tax	2,088		2,088		972
Long-term Debt, Fair Value	19,675		19,675		20,212
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax	271		271		211
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax	570		570		285
Derivative Assets (Liabilities), at Fair Value, Net	(299)		(299)		(74)
Long Term Debt, Accumulated Fair Value Adjustment	27		27		(18)
Proceeds from sales of available-for-sale securities			904	$ 880
Gross realized gains			32	19
Gross realized losses			14	26
Cost Method Investments	207		207		204
Equity Securities, Net Unrealized Gain (Loss)	1	$ 2	7	$ 10
Long-term debt
Investment [Line Items]
Derivative, Notional Amount	2,890		2,890		2,290
Interest Rate Contract [Member]
Investment [Line Items]
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax	72		72		0
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax	385		385		64
Derivative Assets (Liabilities), at Fair Value, Net	(313)		(313)		(64)
Foreign Exchange Contract [Member]
Investment [Line Items]
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax	134		134		120
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax	21		21		43
Derivative Assets (Liabilities), at Fair Value, Net	113		113		77
Commodity Contract [Member]
Investment [Line Items]
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax	65		65		91
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax	164		164		178
Derivative Assets (Liabilities), at Fair Value, Net	(99)		(99)		(87)
US Treasury and Government [Member]
Investment [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	511		511		714
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	36		36		9
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	8		8		23
Debt Securities, Available-for-sale	539		539		700
Corporate Debt Securities [Member]
Investment [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	1,091		1,091		1,026
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	76		76		20
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	16		16		63
Debt Securities, Available-for-sale	$ 1,151		$ 1,151		$ 983