Statement of Consolidated Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net Income (Loss)	$ 3	$ (593)	$ (149)	$ (1,306)
Derivatives designated as cash flow hedges
Effect of hedge (gains) losses reclassified to income	49	(18)	129	(38)
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	(18)	129	(38)
Change in fair value of cash flow hedges	(49)	(76)	(84)	0
Income taxes on change in fair value of cash flow hedges	12	0	12	0
Net change in fair value of cash flow hedges	(37)	(76)	(72)	0
Change in derivatives designated as cash flow hedges, after taxes	12	(94)	57	(38)
Pension and other postretirement plans
(Increase) reduction in unrecognized actuarial losses	0	0	130	5
Income taxes on actuarial changes in plan liabilities	0	2	(31)	0
(Increase) reduction in unrecognized actuarial losses, net	0	2	99	5
Amortization of net actuarial losses	8	17	29	57
Income taxes on amortization of net actuarial losses	0	0	0	0
Net effect of amortization of net actuarial losses	8	17	29	57
Change in pension and other postretirement plans, after taxes	8	19	128	62
Foreign currency translation adjustment
Foreign currency translation adjustment	0	121	0	208
Change in foreign currency translation adjustment	0	121	0	208
Other Comprehensive Income (Loss)	20	46	185	232
Comprehensive Income (Loss)	23	(547)	36	(1,074)
Less: Comprehensive income (loss) attributable to noncontrolling interests	45	31	129	91
Comprehensive Income (Loss) Attributable to Hess Corporation	$ (22)	$ (578)	$ (93)	$ (1,165)