Segment Information - Financial Data by Operating Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Operating Revenues - Third-parties	$ 5,466	$ 4,762	$ 6,636
Intersegment Revenues	0	0	0
Operating Revenues	5,466	4,762	6,636
Net Income (Loss) from Continuing Operations Attributable to Hess Corporation	(4,074)	(6,132)	(3,008)
Interest Expense	325	338	341
Depreciation, Depletion and Amortization	2,883	3,244	3,955
Impairment	4,203	67	1,616
Provision (Benefit) for Income Taxes	(1,837)	2,222	(1,299)
Investment in Affiliates	134	146
Identifiable Assets	23,112	28,621
Capital Expenditures	1,973	1,921	4,049
Midstream
Segment Reporting Information [Line Items]
Impairment		67
Operating Segments | Exploration and Production
Segment Reporting Information [Line Items]
Operating Revenues - Third-parties	5,460	4,755	6,627
Intersegment Revenues	0	0	0
Operating Revenues	5,460	4,755	6,627
Net Income (Loss) from Continuing Operations Attributable to Hess Corporation	(3,653)	(4,964)	(2,727)
Interest Expense	0	0	0
Depreciation, Depletion and Amortization	2,736	3,113	3,833
Impairment	4,203	0	1,616
Provision (Benefit) for Income Taxes	(1,842)	1,587	(1,117)
Investment in Affiliates	134	146
Identifiable Assets	15,613	22,856
Capital Expenditures	1,852	1,638	3,749
Operating Segments | Midstream
Segment Reporting Information [Line Items]
Operating Revenues - Third-parties	6	7	9
Intersegment Revenues	611	562	625
Operating Revenues	617	569	634
Net Income (Loss) from Continuing Operations Attributable to Hess Corporation	42	42	96
Interest Expense	26	19	10
Depreciation, Depletion and Amortization	123	121	107
Impairment	0	67	0
Provision (Benefit) for Income Taxes	31	26	58
Investment in Affiliates	0	0
Identifiable Assets	3,329	3,165
Capital Expenditures	121	283	300
Operating Segments | Corporate, Interest and Other
Segment Reporting Information [Line Items]
Operating Revenues - Third-parties	0	0	0
Intersegment Revenues	0	0	0
Operating Revenues	0	0	0
Net Income (Loss) from Continuing Operations Attributable to Hess Corporation	(463)	(1,210)	(377)
Interest Expense	299	319	331
Depreciation, Depletion and Amortization	24	10	15
Impairment	0	0	0
Provision (Benefit) for Income Taxes	(26)	609	(240)
Investment in Affiliates	0	0
Identifiable Assets	4,170	2,600
Capital Expenditures	0	0	0
Eliminations
Segment Reporting Information [Line Items]
Operating Revenues - Third-parties	0	0	0
Intersegment Revenues	(611)	(562)	(625)
Operating Revenues	(611)	(562)	(625)
Net Income (Loss) from Continuing Operations Attributable to Hess Corporation	0	0	0
Interest Expense	0	0	0
Depreciation, Depletion and Amortization	0	0	0
Impairment	0	0	0
Provision (Benefit) for Income Taxes	0	0	0
Investment in Affiliates	0	0
Identifiable Assets	0	0
Capital Expenditures	$ 0	$ 0	$ 0