INDUSTRY SEGMENTS AND GEOGRAPHIC AREAS - CORPORATE and GEOGRAPHIC AREAS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Information
Net sales	$ 12,508	$ 10,090	$ 12,480
Property, plant and equipment, net	31,174	32,337	31,639
Corporate significant items affecting earnings/Pre-tax operating profit (loss)
Pre-tax operating profit (loss)	1,328	(1,664)	(9,476)
Income taxes	(17)	662	1,330
United States
Segment Information
Net sales	8,085	6,290	7,479
Property, plant and equipment, net	22,863	24,004	23,265
Total Foreign
Segment Information
Net sales	4,423	3,800	5,001
Property, plant and equipment, net	8,311	8,333	8,374
Oman
Segment Information
Net sales	1,397	1,101	1,631
Property, plant and equipment, net	1,962	1,858	1,292
Qatar
Segment Information
Net sales	1,394	1,206	1,449
Property, plant and equipment, net	1,236	1,299	1,354
Colombia
Segment Information
Net sales	555	463	570
Property, plant and equipment, net	807	741	821
United Arab Emirates
Segment Information
Net sales	808	664	477
Property, plant and equipment, net	4,241	4,373	4,484
Other Foreign
Segment Information
Net sales	269	366	874
Property, plant and equipment, net	65	62	423
Corporate
Corporate significant items affecting earnings/Pre-tax operating profit (loss)
Income taxes	$ 392	424	1,903
Corporate | Pre-tax operating profit (loss)
Corporate significant items affecting earnings/Pre-tax operating profit (loss)
Asset sale losses			(8)
Asset impairments and related items		(619)	(235)
Severance, spin-off and other			(118)
Pre-tax operating profit (loss)		$ (619)	$ (361)