Consolidated Statement Of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss) including noncontrolling interests	$ 35,063	$ 37,354	$ 57,577
Other comprehensive income (loss) (net of income taxes)
Foreign exchange translation adjustment	(3,550)	1,241	(3,482)
Adjustment for foreign exchange translation (gain)/loss included in net income	0	609	0
Postretirement benefits reserves adjustment (excluding amortization)	557	(369)	3,395
Amortization and settlement of postretirement benefits reserves adjustment included in net periodic benefit costs	43	61	403
Total other comprehensive income (loss)	(2,950)	1,542	316
Comprehensive income (loss) including noncontrolling interests	32,113	38,896	57,893
Comprehensive income (loss) attributable to noncontrolling interests	1,063	1,605	1,659
Comprehensive income (loss) attributable to ExxonMobil	$ 31,050	$ 37,291	$ 56,234