Segment Information - Financial Data by Operating Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	$ 6,323	$ 5,466	$ 4,762
Intersegment revenues	0	0	0
Total sales and other operating revenues	6,323	5,466	4,762
Net Income (Loss) Attributable to Hess Corporation	(282)	(4,074)	(6,132)
Interest Expense	399	325	338
Depreciation, Depletion and Amortization	1,883	2,883	3,244
Impairment	0	4,203	67
Provision (Benefit) for Income Taxes	335	(1,837)	2,222
Investment in Affiliates	193	134
Identifiable Assets	21,433	23,112
Capital Expenditures	2,180	1,973	1,921
Eliminations
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	0	0	0
Intersegment revenues	(713)	(611)	(562)
Total sales and other operating revenues	(713)	(611)	(562)
Net Income (Loss) Attributable to Hess Corporation	0	0	0
Interest Expense	0	0	0
Depreciation, Depletion and Amortization	0	0	0
Impairment		0	0
Provision (Benefit) for Income Taxes	0	0	0
Investment in Affiliates	0	0
Identifiable Assets	0	0
Capital Expenditures	0	0	0
Exploration and Production | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	6,323	5,460	4,755
Intersegment revenues	0	0	0
Total sales and other operating revenues	6,323	5,460	4,755
Net Income (Loss) Attributable to Hess Corporation	51	(3,653)	(4,964)
Interest Expense	0	0	0
Depreciation, Depletion and Amortization	1,748	2,736	3,113
Impairment		4,203	0
Provision (Benefit) for Income Taxes	391	(1,842)	1,587
Investment in Affiliates	126	134
Identifiable Assets	16,109	15,613
Capital Expenditures	1,909	1,852	1,638
Midstream
Segment Reporting Information [Line Items]
Impairment			67
Midstream | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	0	6	7
Intersegment revenues	713	611	562
Total sales and other operating revenues	713	617	569
Net Income (Loss) Attributable to Hess Corporation	120	42	42
Interest Expense	60	26	19
Depreciation, Depletion and Amortization	127	123	121
Impairment		0	67
Provision (Benefit) for Income Taxes	38	31	26
Investment in Affiliates	67	0
Identifiable Assets	3,285	3,329
Capital Expenditures	271	121	283
Corporate, Interest and Other | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	0	0	0
Intersegment revenues	0	0	0
Total sales and other operating revenues	0	0	0
Net Income (Loss) Attributable to Hess Corporation	(453)	(463)	(1,210)
Interest Expense	339	299	319
Depreciation, Depletion and Amortization	8	24	10
Impairment		0	0
Provision (Benefit) for Income Taxes	(94)	(26)	609
Investment in Affiliates	0	0
Identifiable Assets	2,039	4,170
Capital Expenditures	$ 0	$ 0	$ 0