Statement of Consolidated Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net Income (Loss)	$ (2,366)	$ 75
Derivatives designated as cash flow hedges
Effect of hedge (gains) losses reclassified to income	(64)	(15)
Income taxes on effect of hedge (gains) losses reclassified to income	0	0
Net effect of hedge (gains) losses reclassified to income	(64)	(15)
Change in fair value of cash flow hedges	990	(346)
Income taxes on change in fair value of cash flow hedges	0	0
Net change in fair value of cash flow hedges	990	(346)
Change in derivatives designated as cash flow hedges, after taxes	926	(361)
Pension and other postretirement plans
(Increase) reduction in unrecognized actuarial losses	0	6
Income taxes on actuarial changes in plan liabilities	0	0
(Increase) reduction in unrecognized actuarial losses, net	0	6
Amortization of net actuarial losses	12	11
Income taxes on amortization of net actuarial losses	0	0
Net effect of amortization of net actuarial losses	12	11
Change in pension and other postretirement plans, after taxes	12	17
Other Comprehensive Income (Loss)	938	(344)
Comprehensive Income (Loss)	(1,428)	(269)
Less: Comprehensive income (loss) attributable to noncontrolling interests	67	43
Comprehensive Income (Loss) Attributable to Hess Corporation	$ (1,495)	$ (312)