CONSOLIDATED FINANCIAL STATEMENTS Changes to Cash Flow Statement (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic pension benefit cost		$ 112
Net gain on sales of assets, businesses and investments	$ 33	17
Net gain on sales of investments		0
Net gain on sales of property, businesses and consolidated companies		0
Net loss on sale of ownership interests in nonconsolidated affiliates		0
Other net loss	98	141
Proceeds from interests in trade accounts receivable conduits	(445)	(551)
Accounts and notes receivable	(1,524)	(1,327)
Accounts payable	823	483
Other assets and liabilities, net	684	128
Cash provided by (used for) operating activities	(158)	(76)
Acquisitions of property, businesses and consolidated companies, net of cash acquired	0	26
Proceeds from interests in trade accounts receivable conduits		551
Cash used for investing activities	(92)	(353)
Contingent payment for acquisition of businesses		(26)
Cash used for financing activities	(853)	(257)
Decrease in cash, cash equivalents and restricted cash	(1,003)	(630)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 5,204	5,994	$ 6,207	$ 6,624
Scenario, Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic pension benefit cost		112
Net gain on sales of assets, businesses and investments		(17)
Net gain on sales of investments		12
Net gain on sales of property, businesses and consolidated companies		8
Net loss on sale of ownership interests in nonconsolidated affiliates		(3)
Other net loss		(108)
Proceeds from interests in trade accounts receivable conduits		0
Accounts and notes receivable		0
Accounts payable		161
Other assets and liabilities, net		381
Cash provided by (used for) operating activities		0
Payment into escrow account		0
Acquisitions of property, businesses and consolidated companies, net of cash acquired		0
Proceeds from interests in trade accounts receivable conduits		0
Cash used for investing activities		0
Contingent payment for acquisition of businesses		0
Cash used for financing activities		0
Decrease in cash, cash equivalents and restricted cash		0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents		0		0
Scenario, Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic pension benefit cost		0
Net gain on sales of assets, businesses and investments		0
Net gain on sales of investments		(12)
Net gain on sales of property, businesses and consolidated companies		(8)
Net loss on sale of ownership interests in nonconsolidated affiliates		3
Other net loss		(33)
Proceeds from interests in trade accounts receivable conduits		114
Accounts and notes receivable		(890)
Accounts payable		322
Other assets and liabilities, net		254
Cash provided by (used for) operating activities		476
Payment into escrow account		(130)
Acquisitions of property, businesses and consolidated companies, net of cash acquired		26
Proceeds from interests in trade accounts receivable conduits		0
Cash used for investing activities		(1,060)
Contingent payment for acquisition of businesses		0
Cash used for financing activities		(231)
Decrease in cash, cash equivalents and restricted cash		(759)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents		5,848		6,607
Adjustments for New Accounting Pronouncement [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic pension benefit cost		0
Net gain on sales of assets, businesses and investments		0
Net gain on sales of investments		0
Net gain on sales of property, businesses and consolidated companies		0
Net loss on sale of ownership interests in nonconsolidated affiliates		0
Other net loss		0
Proceeds from interests in trade accounts receivable conduits		(114)
Accounts and notes receivable		(437)
Accounts payable		0
Other assets and liabilities, net		1
Cash provided by (used for) operating activities		(552)
Payment into escrow account		(130)
Acquisitions of property, businesses and consolidated companies, net of cash acquired		26
Proceeds from interests in trade accounts receivable conduits		551
Cash used for investing activities		707
Contingent payment for acquisition of businesses		26
Cash used for financing activities		(26)
Decrease in cash, cash equivalents and restricted cash		129
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents		$ 146		$ 17