Segment Information - Financial Data by Operating Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	$ 6,495	$ 6,323	$ 5,466
Intersegment revenues	0	0	0
Total sales and other operating revenues	6,495	6,323	5,466
Net Income (Loss) Attributable to Hess Corporation	(408)	(282)	(4,074)
Interest Expense	380	399	325
Depreciation, Depletion and Amortization	2,122	1,883	2,883
Impairment			4,203
Provision (Benefit) for Income Taxes	461	335	(1,837)
Investment in Affiliates	222	193
Identifiable Assets	21,782	21,433
Capital Expenditures	2,992	2,180	1,973
Eliminations
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	0	0	0
Intersegment revenues	(848)	(713)	(611)
Total sales and other operating revenues	(848)	(713)	(611)
Net Income (Loss) Attributable to Hess Corporation	0	0	0
Interest Expense	0	0	0
Depreciation, Depletion and Amortization	0	0	0
Impairment			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	6,495	6,323	5,460
Intersegment revenues	0	0	0
Total sales and other operating revenues	6,495	6,323	5,460
Net Income (Loss) Attributable to Hess Corporation	53	51	(3,653)
Interest Expense	0	0	0
Depreciation, Depletion and Amortization	1,977	1,748	2,736
Impairment			4,203
Provision (Benefit) for Income Taxes	375	391	(1,842)
Investment in Affiliates	114	126
Identifiable Assets	16,790	16,109
Capital Expenditures	2,576	1,909	1,852
Midstream | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	0	0	6
Intersegment revenues	848	713	611
Total sales and other operating revenues	848	713	617
Net Income (Loss) Attributable to Hess Corporation	144	120	42
Interest Expense	63	60	26
Depreciation, Depletion and Amortization	142	127	123
Impairment			0
Provision (Benefit) for Income Taxes	0	38	31
Investment in Affiliates	108	67
Identifiable Assets	3,499	3,285
Capital Expenditures	416	271	121
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	(605)	(453)	(463)
Interest Expense	317	339	299
Depreciation, Depletion and Amortization	3	8	24
Impairment			0
Provision (Benefit) for Income Taxes	86	(94)	(26)
Investment in Affiliates	0	0
Identifiable Assets	1,493	2,039
Capital Expenditures	$ 0	$ 0	$ 0