Statement of Consolidated Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net Income (Loss)	$ (65)	$ (296)
Derivatives designated as cash flow hedges
Effect of hedge (gains) losses reclassified to income	31	0
Income taxes on effect of hedge (gains) losses reclassified to income	0	0
Net effect of hedge (gains) losses reclassified to income	31	0
Change in fair value of cash flow hedges	(22)	4
Income taxes on change in fair value of cash flow hedges	0	(2)
Net change in fair value of cash flow hedges	(22)	2
Change in derivatives designated as cash flow hedges, after taxes	9	2
Pension and other postretirement plans
(Increase) reduction in unrecognized actuarial losses	125	7
Income taxes on actuarial changes in plan liabilities	(30)	(3)
(Increase) reduction in unrecognized actuarial losses, net	95	4
Amortization of net actuarial losses	12	17
Income taxes on amortization of net actuarial losses	0	0
Net effect of amortization of net actuarial losses	12	17
Change in pension and other postretirement plans, after taxes	107	21
Foreign currency translation adjustment
Foreign currency translation adjustment	0	14
Change in foreign currency translation adjustment	0	14
Other Comprehensive Income	116	37
Comprehensive Income (Loss)	51	(259)
Less: Comprehensive income attributable to noncontrolling interests	41	28
Comprehensive Income (Loss) Attributable to Hess Corporation	$ 10	$ (287)