INDUSTRY SEGMENTS AND GEOGRAPHIC AREAS - CORPORATE AND GEOGRAPHIC AREAS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Corporate significant items affecting earnings/Pre-tax operating profit (loss)
Pre-tax operating profit (loss)	$ 5,608	$ 1,328	$ (1,664)
Income taxes	(1,477)	(17)	662
Net sales	17,824	12,508	10,090
Property, plant and equipment, net	31,437	31,174	32,337
United States
Corporate significant items affecting earnings/Pre-tax operating profit (loss)
Net sales	13,351	8,959	7,017
Property, plant and equipment, net	23,594	22,863	24,004
Total Foreign
Corporate significant items affecting earnings/Pre-tax operating profit (loss)
Net sales	5,403	4,423	3,800
Property, plant and equipment, net	7,843	8,311	8,333
Qatar
Corporate significant items affecting earnings/Pre-tax operating profit (loss)
Net sales	1,701	1,394	1,206
Property, plant and equipment, net	741	1,236	1,299
Oman
Corporate significant items affecting earnings/Pre-tax operating profit (loss)
Net sales	1,667	1,397	1,101
Property, plant and equipment, net	2,048	1,962	1,858
United Arab Emirates
Corporate significant items affecting earnings/Pre-tax operating profit (loss)
Net sales	1,021	808	664
Property, plant and equipment, net	4,051	4,241	4,373
Colombia
Corporate significant items affecting earnings/Pre-tax operating profit (loss)
Net sales	715	555	463
Property, plant and equipment, net	927	807	741
Other International
Corporate significant items affecting earnings/Pre-tax operating profit (loss)
Net sales	299	269	366
Property, plant and equipment, net	76	65	62
Eliminations
Corporate significant items affecting earnings/Pre-tax operating profit (loss)
Pre-tax operating profit (loss)	(795)	(690)	(1,218)
Income taxes	(1,477)	(17)	662
Net sales	(930)	(874)	(727)
Property, plant and equipment, net	$ 0	$ 0	$ 0