FINANCIAL INSTRUMENTS Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Investment [Line Items]
Cash Equivalents, at Carrying Value	$ 530		$ 530		$ 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	530		530		566
Available-for-sale Debt Securities, Amortized Cost Basis, Current	20		20		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	20		20		100
Debt Securities, Available-for-sale, Amortized Cost	1,594		1,594		1,740
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	91		91		29
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	18		18		86
Debt Securities, Available-for-sale	1,667		1,667		1,683
Equity Securities, Amortized Cost Basis	15		15		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	21		21		16
Other Investments and Securities, at Cost	1,609		1,609		1,756
Other Investments and Securities, Accumulated Gross Unrealized Gain, Before Tax	98		98		30
Other Investments and Securities, Accumulated Gross Unrealized Loss, Before Tax	19		19		87
Other Investments	1,688		1,688		1,699
Cash Equivalents, Marketable Securities and Other Investments, Amortized Cost Basis	2,159		2,159		2,422
Cash Equivalents, Marketable Securities and Other Investments, Accumulated Gross Unrealized Gain, Before Tax	98		98		30
Cash Equivalents, Marketable Securities and Other Investments, Accumulated Gross Unrealized Loss, Before Tax	19		19		87
Cash Equivalents, Marketable Securities and Other Investments, Fair Value	2,238		2,238		2,365
Long-term Debt	17,452		17,452		19,591
Long Term Debt, Accumulated Gross Unrealized Gain, Before Tax	2		2		351
Long Term Debt, Accumulated Gross Unrealized Loss, Before Tax	1,922		1,922		972
Long-term Debt, Fair Value	19,372		19,372		20,212
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax	147		147		211
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax	433		433		285
Derivative Assets (Liabilities), at Fair Value, Net	(286)		(286)		(74)
Long Term Debt, Accumulated Fair Value Adjustment	1		1		18
Proceeds from sales of available-for-sale securities			534	$ 625
Gross realized gains			22	15
Gross realized losses			10	18
Cost Method Investments	206		206		204
Equity Securities, Net Unrealized Gain (Loss)	1	$ (1)	6	$ 8
Long-term debt
Investment [Line Items]
Derivative, Notional Amount	2,590		2,590		2,290
Interest Rate Contract [Member]
Investment [Line Items]
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax	11		11		0
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax	225		225		64
Derivative Assets (Liabilities), at Fair Value, Net	(214)		(214)		(64)
Foreign Exchange Contract [Member]
Investment [Line Items]
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax	52		52		120
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax	38		38		43
Derivative Assets (Liabilities), at Fair Value, Net	14		14		77
Commodity Contract [Member]
Investment [Line Items]
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax	84		84		91
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax	170		170		178
Derivative Assets (Liabilities), at Fair Value, Net	(86)		(86)		(87)
US Treasury and Government [Member]
Investment [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	540		540		714
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	28		28		9
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	5		5		23
Debt Securities, Available-for-sale	563		563		700
Corporate Debt Securities [Member]
Investment [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	1,054		1,054		1,026
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	63		63		20
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	13		13		63
Debt Securities, Available-for-sale	$ 1,104		$ 1,104		$ 983