Condensed Consolidated Statement Of Cash Flows - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net income (loss) including noncontrolling interests		$ (2,648)	$ 9,044
Depreciation and depletion		15,718	14,075
Noncash inventory adjustment - lower of cost or market		61	0
Changes in operational working capital, excluding cash and debt		(1,539)	2,564
All other items – net		(929)	(2,319)
Net cash provided by operating activities		10,663	23,364
Cash flows from investing activities
Additions to property, plant and equipment		(13,653)	(17,657)
Proceeds associated with sales of subsidiaries, property, plant and equipment, and sales and returns of investments		229	600
Additional investments and advances		(3,443)	(2,532)
Other investing activities including collection of advances		1,710	769
Net cash used in investing activities		(15,157)	(18,820)
Cash flows from financing activities
Additions to long-term debt		23,186	7,019
Reductions in long-term debt		(4)	0
Reductions in short-term debt		(1,651)	(3,836)
Additions/(reductions) in commercial paper, and debt with three months or less maturity	[1]	139	6,139
Contingent consideration payments		(21)	0
Cash dividends to ExxonMobil shareholders		(11,150)	(10,936)
Cash dividends to noncontrolling interests		(137)	(157)
Changes in noncontrolling interests		511	30
Common stock acquired		(305)	(421)
Net cash used in financing activities		10,568	(2,162)
Effects of exchange rate changes on cash		(331)	(73)
Increase/(decrease) in cash and cash equivalents		5,743	2,309
Cash and cash equivalents at beginning of period		3,089	3,042
Cash and cash equivalents at end of period		8,832	5,351
Supplemental Disclosures
Income taxes paid		2,341	5,259
Cash interest paid
Cash interest paid - Included in cash flows from operating activities		726	515
Cash interest paid - Capitalized, included in cash flows from investing activities		516	540
Total cash interest paid		$ 1,242	$ 1,055

[1] Includes a net addition of commercial paper with a maturity of over three months of $6.4 billion in 2020 and $3.1 billion in 2019. The gross amount of commercial paper with a maturity of over three months issued was $28.8 billion in 2020 and $13.4 billion in 2019, while the gross amount repaid was $22.4 billion in 2020 and $10.3 billion in 2019.