Weighted Average Common Shares - Net Income (Loss) and Weighted Average Number of Common Shares Used in Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net income (loss) attributable to Hess Corporation Common Stockholders:
Net income (loss)	$ (183)	$ (166)	$ (2,812)	$ (57)
Less: Net income (loss) attributable to noncontrolling interests	60	46	184	129
Less: Preferred stock dividends	0	0	0	4
Net income (loss) attributable to Hess Corporation Common Stockholders	$ (243)	$ (212)	$ (2,996)	$ (190)
Weighted average number of common shares outstanding:
Basic (in shares)	305.0	302.5	304.7	300.7
Diluted (in shares)	305.0	302.5	304.7	300.7
Restricted common stock
Weighted average number of common shares outstanding:
Effect of dilutive securities (in shares)	0.0	0.0	0.0	0.0
Stock options
Weighted average number of common shares outstanding:
Effect of dilutive securities (in shares)	0.0	0.0	0.0	0.0
Performance share units
Weighted average number of common shares outstanding:
Effect of dilutive securities (in shares)	0.0	0.0	0.0	0.0