Statement of Consolidated Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net Income (Loss)	$ (87)	$ (417)	$ (152)	$ (713)
Derivatives designated as cash flow hedges
Effect of hedge (gains) losses reclassified to income	49	(20)	80	(20)
Income taxes on effect of hedge (gains) losses reclassified to income	0	0	0	0
Net effect of hedge (gains) losses reclassified to income	49	(20)	80	(20)
Change in fair value of cash flow hedges	(13)	72	(35)	76
Income taxes on change in fair value of cash flow hedges	0	2	0	0
Net change in fair value of cash flow hedges	(13)	74	(35)	76
Change in derivatives designated as cash flow hedges, after taxes	36	54	45	56
Pension and other postretirement plans
(Increase) reduction in unrecognized actuarial losses	5	(2)	130	5
Income taxes on actuarial changes in plan liabilities	(1)	1	(31)	(2)
(Increase) reduction in unrecognized actuarial losses, net	4	(1)	99	3
Amortization of net actuarial losses	9	23	21	40
Income taxes on amortization of net actuarial losses	0	0	0	0
Net effect of amortization of net actuarial losses	9	23	21	40
Change in pension and other postretirement plans, after taxes	13	22	120	43
Foreign currency translation adjustment
Foreign currency translation adjustment	0	73	0	87
Change in foreign currency translation adjustment	0	73	0	87
Other Comprehensive Income (Loss)	49	149	165	186
Comprehensive Income (Loss)	(38)	(268)	13	(527)
Less: Comprehensive income (loss) attributable to noncontrolling interests	43	32	84	60
Comprehensive Income (Loss) Attributable to Hess Corporation	$ (81)	$ (300)	$ (71)	$ (587)