Inventory, Crude Oil, In Transit

No definition available.

Name:	hes_InventoryCrudeOilInTransit
Namespace Prefix:	hes_
Data Type:	num:volumeItemType
Balance Type:	na
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- Definition

Inventory write down after income tax.

+ References

No definition available.

+ Details

Name:	hes_InventoryWriteDownAfterIncomeTax
Namespace Prefix:	hes_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of VLCCs

+ References

No definition available.

+ Details

Name:	hes_NumberOfVLCCs
Namespace Prefix:	hes_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of VLCC's Cargos Sold

+ References

No definition available.

+ Details

Name:	hes_NumberOfVLCCsCargosSold
Namespace Prefix:	hes_
Data Type:	xbrli:integerItemType
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- Definition

The aggregate carrying amount as of the balance sheet date of unrefined petroleum and the liquid hydrocarbon components recovered from natural gas.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_CrudeOilAndNaturalGasLiquids
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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

Name:	us-gaap_InventoryLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=116847112&loc=d3e4542-108314

+ Details

Name:	us-gaap_InventoryWriteDown
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Details

Name:	us-gaap_PublicUtilitiesInventoryAxis=hes_VeryLargeCrudeCarriersVLCCsMember
Namespace Prefix:
Data Type:	na
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Period Type:

Inventories - Additional Information (Detail) bbl in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($) vlcc	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($) vlcc bbl
Inventory [Line Items]
Cost of crude oil	$ 46		$ 226
Charges related to inventories		$ 53
Charges related to inventories, after income taxes		$ 52
Very Large Crude Carriers (VLCCs)
Inventory [Line Items]
Cost of crude oil			$ 164
Crude oil loaded in very large crude carriers (in barrels of oil) \| bbl			4.2
Number of very large crude carriers \| vlcc			2
Number of VLCC's cargos sold \| vlcc	2