Financial Risk Management Activities - Crude Oil Collar Positions by Year of Settlement (Detail)	9 Months Ended
Sep. 30, 2017 bbl / d $ / bbl
2017 \| Brent
Derivative [Line Items]
Outstanding average barrels of oil per day \| bbl / d	20,000
Average ceiling price	75
Average floor price	55
2017 \| WTI
Derivative [Line Items]
Outstanding average barrels of oil per day \| bbl / d	110,000
Average ceiling price	68
Average floor price	50
2018 \| Brent
Derivative [Line Items]
Outstanding average barrels of oil per day \| bbl / d	0
Average ceiling price	0
Average floor price	0
2018 \| WTI
Derivative [Line Items]
Outstanding average barrels of oil per day \| bbl / d	115,000
Average ceiling price	65
Average floor price	50

Derivative nonmonetary notional amount volume of oil per day from quarter end to following year end.

No definition available.

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Namespace Prefix:	hes_
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Period Type:	duration

- Definition

Derivative nonmonetary notional amount volume of oil per day from quarter end through to year end.

+ References

No definition available.

+ Details

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Namespace Prefix:	hes_
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- Definition

The average cap rate on a group of price risk derivatives such as caps or collars. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

+ References

No definition available.

+ Details

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Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

The average floor rate on a group of price risk derivatives such as floors or collars. A payment or receipt is triggered if the market rate falls below the floor rate on the contract.

+ 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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- Details

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- Details

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- Details

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Namespace Prefix:
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- Details

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