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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net income (loss) attributable to Hess Corporation:
Net income (loss)	$ 13	$ (263)	$ 349	$ (2,629)
Less: Net income (loss) attributable to noncontrolling interests	86	57	170	124
Net Income (Loss) Attributable to Hess Corporation	$ (73)	$ (320)	$ 179	$ (2,753)
Weighted average number of common shares outstanding:
Basic (in shares)	307.5	305.0	306.7	304.5
Diluted (in shares)	307.5	305.0	308.7	304.5
Restricted common stock
Weighted average number of common shares outstanding:
Effect of dilutive securities (in shares)	0.0	0.0	0.7	0.0
Stock options
Weighted average number of common shares outstanding:
Effect of dilutive securities (in shares)	0.0	0.0	0.5	0.0
Performance share units
Weighted average number of common shares outstanding:
Effect of dilutive securities (in shares)	0.0	0.0	0.8	0.0