FAIR VALUE MEASUREMENTS (Summary of Recurring Measured Fair Values) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities 3	$ 8		$ 8		$ 15
Debt Securities, Available-for-sale	1,366		1,366		1,569
Long-term debt including debt due within one year 6	19,641		19,641		18,661
Asset Impairment Charges	46		58
Restructuring and asset related charges - net	617	$ 147	719	$ 368
US Treasury and Government [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	491		491		555
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	875		875		1,014
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	513		513		274
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	30		30		21
Equity securities 3	8		8		15
Total assets at fair value	3,304		3,304		2,507
Long-term debt including debt due within one year 6	19,641		19,641		18,661
Total liabilities at fair value	20,375		20,375		19,191
Fair Value, Recurring [Member] | Held-to-maturity Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents 1	696		696		220
Fair Value, Recurring [Member] | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents 1	691		691		408
Fair Value, Recurring [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	229		229		35
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	361		361		310
Fair Value, Recurring [Member] | Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	86		86		149
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	135		135		69
Fair Value, Recurring [Member] | Commodity Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	198		198		90
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	238		238		151
Fair Value, Recurring [Member] | US Treasury and Government [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	491		491		555
Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	875		875		1,014
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0		0		0
Equity securities 3	8		8		15
Total assets at fair value	44		44		60
Long-term debt including debt due within one year 6	0		0		0
Total liabilities at fair value	8		8		14
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Held-to-maturity Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents 1	0		0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents 1	0		0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	0		0		0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	0		0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	0		0		0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	0		0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Commodity Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	12		12		23
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	8		8		14
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury and Government [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	0		0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	24		24		22
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	30		30		21
Equity securities 3	0		0		0
Total assets at fair value	3,260		3,260		2,447
Long-term debt including debt due within one year 6	19,641		19,641		18,661
Total liabilities at fair value	20,367		20,367		19,177
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Held-to-maturity Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents 1	696		696		220
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents 1	691		691		408
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	229		229		35
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	361		361		310
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	86		86		149
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	135		135		69
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commodity Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	186		186		67
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	230		230		137
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Treasury and Government [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	491		491		555
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale	851		851		992
Fair Value, Recurring [Member] | Fair Value Measured at Net Asset Value Per Share [Member] | Private Market Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	109		109		117
Fair Value, Recurring [Member] | Fair Value Measured at Net Asset Value Per Share [Member] | Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	20		20		18
Fair Value, Recurring [Member] | Fair Value Measured at Net Asset Value Per Share [Member] | Private Market Securities and Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	$ 67		$ 67		$ 76