Statement of Consolidated Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ (2,839)	$ (240)	$ (115)
Derivatives designated as cash flow hedges
Effect of hedge (gains) losses reclassified to income	(547)	(1)	173
Income taxes on effect of hedge (gains) losses reclassified to income	0	0	0
Net effect of hedge (gains) losses reclassified to income	(547)	(1)	173
Change in fair value of cash flow hedges	649	(462)	330
Income taxes on change in fair value of cash flow hedges	0	86	(86)
Net change in fair value of cash flow hedges	649	(376)	244
Change in derivatives designated as cash flow hedges, after taxes	102	(377)	417
Pension and other postretirement plans
(Increase) reduction in unrecognized actuarial losses	(205)	(160)	29
Income taxes on actuarial changes in plan liabilities	0	0	(6)
(Increase) reduction in unrecognized actuarial losses, net	(205)	(160)	23
Amortization of net actuarial losses	47	144	41
Income taxes on amortization of net actuarial losses	0	0	0
Net effect of amortization of net actuarial losses	47	144	41
Change in pension and other postretirement plans, after taxes	(158)	(16)	64
Other Comprehensive Income (Loss)	(56)	(393)	481
Comprehensive Income (Loss)	(2,895)	(633)	366
Less: Comprehensive income (loss) attributable to noncontrolling interests	254	168	167
Comprehensive Income (Loss) Attributable to Hess Corporation	$ (3,149)	$ (801)	$ 199