Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income	$ 9,149	$ 11,879	$ 1,288
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	2,701	2,473	2,405
Loss (gain) on early redemption and retirement of debt, net	(11)	(14)	193
Asset impairment loss	0	61	0
Gain on sale of assets	0	0	(62)
Deferred income tax expense (benefit)	103	50	(126)
Changes in current assets and current liabilities	(2,326)	(1,626)	2,225
Changes in deferred charges and credits and other operating activities, net	(387)	(249)	(64)
Net cash provided by operating activities	9,229	12,574	5,859
Cash flows from investing activities:
Purchases of available-for-sale (AFS) debt securities	(276)	(100)	0
Proceeds from sales and maturities of AFS debt securities	314	5	0
Proceeds from sale of assets	0	32	270
Investments in nonconsolidated joint ventures	0	(1)	(9)
Other investing activities, net	13	(4)	38
Net cash used in investing activities	(1,865)	(2,805)	(2,159)
Cash flows from financing activities:
Premiums paid on early redemption and retirement of debt	(5)	(56)	(179)
Purchases of common stock for treasury	(5,136)	(4,577)	(27)
Common stock dividend payments	(1,452)	(1,562)	(1,602)
Contributions from noncontrolling interests	75	265	189
Distributions to noncontrolling interests	(164)	(93)	(2)
Other financing activities, net	3	(16)	(18)
Net cash used in financing activities	(6,941)	(8,849)	(2,846)
Effect of foreign exchange rate changes on cash	139	(180)	(45)
Net increase in cash and cash equivalents	562	740	809
Cash and cash equivalents at beginning of year	4,862	4,122	3,313
Cash and cash equivalents at end of year	5,424	4,862	4,122
Excluding Variable Interest Entities (VIEs) [Member]
Cash flows from investing activities:
Capital expenditures	(665)	(788)	(513)
Deferred turnaround and catalyst cost expenditures	(946)	(1,030)	(787)
Cash flows from financing activities:
Proceeds from debt issuances and borrowings	1,750	2,239	1,446
Repayments of debt and finance lease obligations	(2,125)	(5,067)	(2,849)
Diamond Green Diesel Holdings LLC (DGD) [Member]
Cash flows from investing activities:
Capital expenditures	(235)	(853)	(1,042)
Deferred turnaround and catalyst cost expenditures	(59)	(26)	(6)
Cash flows from financing activities:
Proceeds from debt issuances and borrowings	550	809	301
Repayments of debt and finance lease obligations	(480)	(823)	(180)
Other VIEs [Member]
Cash flows from investing activities:
Capital expenditures	(11)	(40)	(110)
Cash flows from financing activities:
Proceeds from borrowings of other VIEs	120	105	81
Repayments of debt and finance lease obligations	$ (77)	$ (73)	$ (6)