Segment Information - Financial Data by Operating Segment (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	$ 1,572	$ 1,346
Intersegment revenues	0	0
Total sales and other operating revenues	1,572	1,346
Net Income (Loss) attributable to Hess Corporation	32	(106)
Depreciation, depletion and amortization	498	417
Provision (benefit) for income taxes	94	73
Capital Expenditures	642	391
Identifiable assets	21,716		$ 21,433
Eliminations
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	0	0
Intersegment revenues	(190)	(167)
Total sales and other operating revenues	(190)	(167)
Net Income (Loss) attributable to Hess Corporation	0	0
Depreciation, depletion and amortization	0	0
Provision (benefit) for income taxes	0	0
Capital Expenditures	0	0
Exploration and Production | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	1,572	1,346
Intersegment revenues	0	0
Total sales and other operating revenues	1,572	1,346
Net Income (Loss) attributable to Hess Corporation	109	(25)
Depreciation, depletion and amortization	464	385
Provision (benefit) for income taxes	95	95
Capital Expenditures	515	354
Identifiable assets	16,978		16,109
Midstream | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	0	0
Intersegment revenues	190	167
Total sales and other operating revenues	190	167
Net Income (Loss) attributable to Hess Corporation	37	28
Depreciation, depletion and amortization	34	31
Provision (benefit) for income taxes	0	9
Capital Expenditures	127	37
Identifiable assets	3,280		3,285
Corporate, Interest and Other | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	0	0
Intersegment revenues	0	0
Total sales and other operating revenues	0	0
Net Income (Loss) attributable to Hess Corporation	(114)	(109)
Depreciation, depletion and amortization	0	1
Provision (benefit) for income taxes	(1)	(31)
Capital Expenditures	0	$ 0
Identifiable assets	$ 1,458		$ 2,039