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

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 subsequently expensed.

+ References

No definition available.

+ Details

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Namespace Prefix:	hes_
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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

Project interest percentage.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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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://www.xbrl.org/2003/role/presentationRef
-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
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Period Type:	duration

- 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://www.xbrl.org/2003/role/presentationRef
-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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Data Type:	xbrli:monetaryItemType
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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 - Capitalized Exploratory Well Costs - Additional Information (Detail) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2017 USD ($)	Jun. 30, 2016 USD ($) Well	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Capitalized Exploratory Well Costs [Line Items]
Charge to write-off previously capitalized exploratory wells			$ 268	$ 897	$ 356
Exploratory dry hole costs which were incurred and subsequently expensed				$ 167	$ 54
Capitalized exploratory well costs that have been capitalized for period greater than one year	$ 170		$ 170
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 interest percentage	28.00%		28.00%
Capitalized well costs percentage	70.00%		70.00%
JDA, Gulf of Thailand
Capitalized Exploratory Well Costs [Line Items]
Project interest percentage	50.00%		50.00%
Capitalized well costs percentage	20.00%		20.00%
Ghana
Capitalized Exploratory Well Costs [Line Items]
Project interest percentage	50.00%		50.00%
Charge to write-off previously capitalized exploratory wells	$ 268		$ 268