Represents project cost relative to capitalized well cost greater than one year.

No definition available.

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Namespace Prefix:	hes_
Data Type:	num:percentItemType
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- Definition

Exploratory dry hole costs incurred and expended during the year.

+ References

No definition available.

+ Details

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Namespace Prefix:	hes_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Exploratory dry hole costs incurred and expended during the year.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of wells expensed during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	hes_
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Period Type:	duration

- Definition

Percentage of participation interest in exploration project.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of expense for capitalized exploratory well costs for which proved reserves were not found at the exploratory well.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 1B
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=68064819&loc=SL6806780-109447

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

The amount of exploratory well costs that have been capitalized for a period of greater than one year after the completion of drilling.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 1B
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=68064819&loc=SL6806780-109447

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Property, Plant and Equipment - Additional Information (Detail) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2017 USD ($)	Jun. 30, 2016 Well	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Capitalized Exploratory Well Costs [Line Items]
Charge to write-off previously capitalized exploratory wells			$ 14	$ 268	$ 897
Exploratory dry hole costs which were incurred and subsequently expensed			151	$ 0	167
Capitalized exploratory well costs that have been capitalized for period greater than one year			$ 267
Hess-operated Equus Natural Gas Project, Australia
Capitalized Exploratory Well Costs [Line Items]
Charge to write-off previously capitalized exploratory wells					$ 830
Gulf Of Mexico
Capitalized Exploratory Well Costs [Line Items]
Number of wells expensed during the period \| Well		2
Northern Portion of Shenzi Field, Gulf of Mexico
Capitalized Exploratory Well Costs [Line Items]
Project participation interest percentage			28.00%
Capitalized well costs percentage			45.00%
Liza-4, Payara-1, Payara-2 and Snoek-1 Wells on the Stabroek Block, Offshore Guyana
Capitalized Exploratory Well Costs [Line Items]
Project participation interest percentage			30.00%
Capitalized well costs percentage			35.00%
JDA, Gulf of Thailand
Capitalized Exploratory Well Costs [Line Items]
Project participation interest percentage			50.00%
Capitalized well costs percentage			15.00%
North Malay Basin, offshore Peninsular Malaysia
Capitalized Exploratory Well Costs [Line Items]
Project participation interest percentage			50.00%
Capitalized well costs percentage			5.00%
Canada
Capitalized Exploratory Well Costs [Line Items]
Project participation interest percentage			50.00%
Charge to write-off previously capitalized exploratory wells			$ 120
Exploratory dry hole costs which were incurred and expensed			$ 106
Ghana
Capitalized Exploratory Well Costs [Line Items]
Project participation interest percentage	50.00%			50.00%
Charge to write-off previously capitalized exploratory wells	$ 268			$ 268