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, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net income (loss) attributable to Hess Corporation Common Stockholders:
Net income (loss)	$ (263)	$ 34	$ (2,629)	$ 109
Less: Net income (loss) attributable to noncontrolling interests	57	40	124	83
Less: Preferred stock dividends	0	0	0	4
Net income (loss) attributable to Hess Corporation Common Stockholders	$ (320)	$ (6)	$ (2,753)	$ 22
Weighted average number of common shares outstanding:
Basic (in shares)	305.0	302.2	304.5	299.8
Diluted (in shares)	305.0	302.2	304.5	302.1
Restricted common stock
Weighted average number of common shares outstanding:
Effect of dilutive securities (in shares)	0.0	0.0	0.0	0.9
Stock options
Weighted average number of common shares outstanding:
Effect of dilutive securities (in shares)	0.0	0.0	0.0	0.2
Performance share units
Weighted average number of common shares outstanding:
Effect of dilutive securities (in shares)	0.0	0.0	0.0	1.2