Segment Information - Financial Information by Major Geographic Area (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	$ 6,495	$ 6,323	$ 5,466
Net Income (Loss) Attributable to Hess Corporation	(408)	(282)	(4,074)
Depreciation, Depletion and Amortization	2,122	1,883	2,883
Impairment			4,203
Provision (benefit) for income taxes	461	335	(1,837)
Identifiable Assets	21,782	21,433
Property, Plant and Equipment (Net)	16,814	16,083
Capital Expenditures	2,992	2,180	1,973
Operating Segments | Corporate, Interest and Other
Segment Reporting Information [Line Items]
Sales and other operating revenues	0	0	0
Net Income (Loss) Attributable to Hess Corporation	(605)	(453)	(463)
Depreciation, Depletion and Amortization	3	8	24
Impairment			0
Provision (benefit) for income taxes	86	(94)	(26)
Identifiable Assets	1,493	2,039
Property, Plant and Equipment (Net)	12	15
Capital Expenditures	0	0	0
United States
Segment Reporting Information [Line Items]
Sales and other operating revenues	5,043	4,842	3,692
Net Income (Loss) Attributable to Hess Corporation	15	131	(2,433)
Depreciation, Depletion and Amortization	1,631	1,424	1,942
Impairment			1,700
Provision (benefit) for income taxes	0	(25)	0
Identifiable Assets	14,234	13,250
Property, Plant and Equipment (Net)	12,182	11,653
Capital Expenditures	2,094	1,543	1,387
Europe | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	139	164	629
Net Income (Loss) Attributable to Hess Corporation	2	42	(1,383)
Depreciation, Depletion and Amortization	53	37	381
Impairment			2,503
Provision (benefit) for income taxes	1	15	(1,999)
Identifiable Assets	1,070	1,033
Property, Plant and Equipment (Net)	871	906
Capital Expenditures	40	8	141
Africa | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	551	548	675
Net Income (Loss) Attributable to Hess Corporation	36	36	259
Depreciation, Depletion and Amortization	21	19	263
Impairment			0
Provision (benefit) for income taxes	425	430	197
Identifiable Assets	399	395
Property, Plant and Equipment (Net)	350	355
Capital Expenditures	15	9	30
Asia and Other Countries | Operating Segments
Segment Reporting Information [Line Items]
Sales and other operating revenues	762	769	470
Net Income (Loss) Attributable to Hess Corporation	144	(38)	(54)
Depreciation, Depletion and Amortization	414	395	273
Impairment			0
Provision (benefit) for income taxes	(51)	9	(9)
Identifiable Assets	4,586	4,716
Property, Plant and Equipment (Net)	3,399	3,154
Capital Expenditures	$ 843	$ 620	$ 415