Segment Information - Financial Data by Operating Segment (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	$ 1,354	$ 1,572
Intersegment revenues	0	0
Total sales and other operating revenues	1,354	1,572
Net Income (Loss) attributable to Hess Corporation	(2,433)	32
Depreciation, depletion and amortization	561	498
Impairment	2,126
Provision (benefit) for income taxes	(79)	94
Capital Expenditures	666	642
Identifiable assets	20,717		$ 21,782
Eliminations
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	0	0
Intersegment revenues	(291)	(190)
Total sales and other operating revenues	(291)	(190)
Net Income (Loss) attributable to Hess Corporation	0	0
Depreciation, depletion and amortization	0	0
Impairment	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	1,354	1,572
Intersegment revenues	0	0
Total sales and other operating revenues	1,354	1,572
Net Income (Loss) attributable to Hess Corporation	(2,371)	109
Depreciation, depletion and amortization	521	464
Impairment	2,126
Provision (benefit) for income taxes	(77)	95
Capital Expenditures	609	515
Identifiable assets	14,302		16,790
Midstream | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	0	0
Intersegment revenues	291	190
Total sales and other operating revenues	291	190
Net Income (Loss) attributable to Hess Corporation	61	37
Depreciation, depletion and amortization	38	34
Impairment	0
Provision (benefit) for income taxes	2	0
Capital Expenditures	57	127
Identifiable assets	3,519		3,499
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	(123)	(114)
Depreciation, depletion and amortization	2	0
Impairment	0
Provision (benefit) for income taxes	(4)	(1)
Capital Expenditures	0	$ 0
Identifiable assets	$ 2,896		$ 1,493