Segment Information - Financial Data by Operating Segment (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	$ 1,660	$ 1,534	$ 3,232	$ 2,880
Intersegment revenues	0	0	0	0
Total sales and other operating revenues	1,660	1,534	3,232	2,880
Net Income (Loss) attributable to Hess Corporation	(6)	(130)	26	(236)
Depreciation, depletion and amortization	494	444	992	861
Provision (benefit) for income taxes	132	114	226	187
Capital Expenditures	694	570	1,336	961
Identifiable assets	21,695		21,695		$ 21,433
Eliminations
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	0	0	0	0
Intersegment revenues	(190)	(176)	(380)	(343)
Total sales and other operating revenues	(190)	(176)	(380)	(343)
Net Income (Loss) attributable to Hess Corporation	0	0	0	0
Depreciation, depletion and amortization	0	0	0	0
Provision (benefit) for income taxes	0	0	0	0
Capital Expenditures	0	0	0	0
Exploration and Production | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	1,660	1,534	3,232	2,880
Intersegment revenues	0	0	0	0
Total sales and other operating revenues	1,660	1,534	3,232	2,880
Net Income (Loss) attributable to Hess Corporation	68	31	177	6
Depreciation, depletion and amortization	459	407	923	792
Provision (benefit) for income taxes	131	105	226	200
Capital Expenditures	625	486	1,140	840
Identifiable assets	16,572		16,572		16,109
Midstream | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	0	0	0	0
Intersegment revenues	190	176	380	343
Total sales and other operating revenues	190	176	380	343
Net Income (Loss) attributable to Hess Corporation	35	30	72	58
Depreciation, depletion and amortization	35	31	69	62
Provision (benefit) for income taxes	0	9	0	18
Capital Expenditures	69	84	196	121
Identifiable assets	3,337		3,337		3,285
Corporate, Interest and Other | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues - third-parties	0	0	0	0
Intersegment revenues	0	0	0	0
Total sales and other operating revenues	0	0	0	0
Net Income (Loss) attributable to Hess Corporation	(109)	(191)	(223)	(300)
Depreciation, depletion and amortization	0	6	0	7
Provision (benefit) for income taxes	1	0	0	(31)
Capital Expenditures	0	$ 0	0	$ 0
Identifiable assets	$ 1,786		$ 1,786		$ 2,039