RECENT ACCOUNTING DEVELOPMENTS Schedule of New Accounting Pronouncements and Changes in Accounting Principles (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Item Effected [Line Items]
Cost of products sold	$ 3,948	$ 3,638
Selling and administrative expenses	$ 421	393
Previous Accounting Guidance [Member]
Item Effected [Line Items]
Cost of products sold		3,669	$ 15,300	$ 14,057	$ 14,313
Selling and administrative expenses		400	1,653	1,484	1,539
Non-operating pension expense		0	0	0	0
Adjustments for New Accounting Pronouncement [Member]
Item Effected [Line Items]
Cost of products sold		(31)	(499)	(639)	(270)
Selling and administrative expenses		(7)	(32)	(26)	(43)
Non-operating pension expense		38	531	665	313
Accounting Standards Update 2017-07 [Member]
Item Effected [Line Items]
Cost of products sold		3,638	14,801	13,418	14,043
Selling and administrative expenses		393	1,621	1,458	1,496
Non-operating pension expense		$ 38	$ 531	$ 665	$ 313