Statement of Consolidated Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net Income (Loss)	$ (240)	$ (115)	$ (3,941)
Derivatives designated as cash flow hedges
Effect of hedge (gains) losses reclassified to income	(1)	173	18
Income taxes on effect of hedge (gains) losses reclassified to income	0	0	0
Net effect of hedge (gains) losses reclassified to income	(1)	173	18
Change in fair value of cash flow hedges	(462)	330	(156)
Income taxes on change in fair value of cash flow hedges	86	(86)	0
Net change in fair value of cash flow hedges	(376)	244	(156)
Change in derivatives designated as cash flow hedges, after taxes	(377)	417	(138)
Pension and other postretirement plans
(Increase) reduction in unrecognized actuarial losses	(160)	29	35
Income taxes on actuarial changes in plan liabilities	0	(6)	0
(Increase) reduction in unrecognized actuarial losses, net	(160)	23	35
Amortization of net actuarial losses	144	41	77
Income taxes on amortization of net actuarial losses	0	0	0
Net effect of amortization of net actuarial losses	144	41	77
Change in pension and other postretirement plans, after taxes	(16)	64	112
Foreign currency translation adjustment
Foreign currency translation adjustment	0	0	144
Asset disposition	0	0	900
Change in foreign currency translation adjustment	0	0	1,044
Other Comprehensive Income (Loss)	(393)	481	1,018
Comprehensive Income (Loss)	(633)	366	(2,923)
Less: Comprehensive income (loss) attributable to noncontrolling interests	168	167	133
Comprehensive Income (Loss) Attributable to Hess Corporation	$ (801)	$ 199	$ (3,056)