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
	Mar. 31, 2021	Mar. 31, 2020
Net income (loss) attributable to Hess Corporation:
Net income (loss)	$ 336	$ (2,366)
Less: Net income (loss) attributable to noncontrolling interests	84	67
Net Income (Loss) attributable to Hess Corporation	$ 252	$ (2,433)
Weighted average number of common shares outstanding:
Basic (in shares)	305.8	304.0
Diluted (in shares)	307.8	304.0
Restricted common stock
Weighted average number of common shares outstanding:
Effect of dilutive securities (in shares)	0.8	0.0
Stock options
Weighted average number of common shares outstanding:
Effect of dilutive securities (in shares)	0.4	0.0
Performance share units
Weighted average number of common shares outstanding:
Effect of dilutive securities (in shares)	0.8	0.0