Financial Risk Management Activities - Corporate Financial Risk Management Activities - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017 USD ($) bbl / d $ / bbl	Dec. 31, 2016 USD ($) MMBbls	Dec. 31, 2015 USD ($)	Feb. 15, 2018 USD ($)
Derivative Instruments Gain Loss [Line Items]
Cumulative currency translation gain (losses) recognized in earnings	$ (900,000,000)	$ 0	$ 0
Designated as Cash Flow Hedges
Derivative Instruments Gain Loss [Line Items]
Interest rate swaps designated as cash flow hedges, outstanding	0
Interest Rate Swaps | Designated as Cash Flow Hedges
Derivative Instruments Gain Loss [Line Items]
After-tax deferred income (losses) in Accumulated other comprehensive income (loss) to be reclassified into earnings during the next 12 months	1,000,000
Amount of cash proceeds received from settled interest rate swaps	3,000,000
Outstanding gross notional amount	553,000,000
Change in fair value of interest rate swaps - increase/(decrease)	3,000,000
Interest Rate Swaps | Designated as Fair Value Hedges
Derivative Instruments Gain Loss [Line Items]
Outstanding gross notional amount	450,000,000	350,000,000
Amount of cash proceeds received from settled interest rate swaps		5,000,000	41,000,000
Unrealized change in fair value of interest rate swaps - increase in derivative liability/(increase in asset)	4,000,000	(6,000,000)	(4,000,000)
Interest Rate Swaps | Designated as Fair Value Hedges | Subsequent Event | Debt Hess Corporation | 8.125% Notes Due 2019
Derivative Instruments Gain Loss [Line Items]
Outstanding gross notional amount				$ 350,000,000
Foreign Exchange
Derivative Instruments Gain Loss [Line Items]
Outstanding gross notional amount	52,000,000	785,000,000
Total foreign exchange gains and (losses) reported in Other, net in Revenues and Non-Operating Income in the Statement of Consolidated Income	15,000,000	26,000,000	(21,000,000)
Gain (Loss) on foreign exchange contracts not designated as hedging instruments	3,000,000	62,000,000	98,000,000
After tax foreign currency translation adjustments included in Accumulated other comprehensive income (loss)	$ 144,000,000	56,000,000	(344,000,000)
Accumulated cumulative currency translation adjustment		$ (1,044,000,000)
West Texas Intermediate Crude Oil Price Collars | 2018
Derivative Instruments Gain Loss [Line Items]
Notional amount of outstanding average barrels of oil per day | bbl / d	115,000
West Texas Intermediate Crude Oil Price Collars | 2018 | Designated as Cash Flow Hedges
Derivative Instruments Gain Loss [Line Items]
Notional amount of outstanding average barrels of oil per day | bbl / d	90,000
Average monthly floor price | $ / bbl	50
Average monthly ceiling price | $ / bbl	65
Crude Oil | Derivative Contracts Not Designated as Hedging Instruments
Derivative Instruments Gain Loss [Line Items]
Notional amount of outstanding average barrels of oil per day | bbl / d	25,000
After-tax deferred income (losses) in Accumulated other comprehensive income (loss) to be reclassified into earnings during the next 12 months	$ (12,000,000)
Crude oil price hedging contracts increased (decreased) sales and other operating revenues by this amount, pre-tax	(25,000,000)
Crude Oil | Derivative Contracts Designated as Hedging Instruments
Derivative Instruments Gain Loss [Line Items]
Crude oil price hedging contracts increased (decreased) sales and other operating revenues by this amount, pre-tax	(34,000,000)		126,000,000
Charge for hedge ineffectiveness	(1,000,000)
Other operating revenue, losses associated with changes in time value of crude oil collars	(71,000,000)		$ (48,000,000)
After-tax deferred income (losses) in Accumulated other comprehensive income (loss) to be reclassified into earnings during the next 12 months	$ (127,000,000)
Outstanding gross notional amount, in millions of barrels | MMBbls		0