Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Net income (loss)		$ (652)	$ 1,330
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization expense		691	695
Asset impairment loss		1,131	0
Deferred income tax benefit		(324)	(69)
Changes in current assets and current liabilities		157	(160)
Changes in deferred charges and credits and other operating activities, net		(51)	50
Net cash provided by operating activities		952	1,846
Cash flows from investing activities:
Purchases of available-for-sale (AFS) debt securities		(5)	(11)
Proceeds from sales and maturities of AFS debt securities		9	33
Investments in nonconsolidated joint ventures		(1)	0
Other investing activities, net		21	2
Net cash used in investing activities		(635)	(637)
Cash flows from financing activities:
Purchases of common stock for treasury		(274)	(1,023)
Common stock dividend payments		(356)	(356)
Contributions from noncontrolling interests		0	90
Distributions to noncontrolling interests		(129)	0
Other financing activities, net		(6)	0
Net cash used in financing activities		(382)	(1,644)
Effect of foreign exchange rate changes on cash		43	(72)
Net decrease in cash, cash equivalents, and restricted cash		(22)	(507)
Cash, cash equivalents, and restricted cash at beginning of period	[1]	4,829	5,424
Cash, cash equivalents, and restricted cash at end of period	[1]	4,807	4,917
Excluding Variable Interest Entities (VIEs) [Member]
Cash flows from investing activities:
Capital expenditures		(189)	(128)
Deferred turnaround and catalyst cost expenditures		(374)	(452)
Cash flows from financing activities:
Proceeds from debt issuance and borrowings		2,449	1,250
Repayments of debt and finance lease obligations		(2,047)	(1,467)
Diamond Green Diesel Holdings LLC (DGD) [Member]
Cash flows from investing activities:
Capital expenditures		(59)	(69)
Deferred turnaround and catalyst cost expenditures		(36)	(9)
Cash flows from financing activities:
Proceeds from debt issuance and borrowings		50	100
Repayments of debt and finance lease obligations		(57)	(256)
Other VIEs [Member]
Cash flows from investing activities:
Capital expenditures		(1)	(3)
Cash flows from financing activities:
Proceeds from debt borrowings of other VIEs		0	20
Repayments of debt and finance lease obligations		$ (12)	$ (2)

[1] Restricted cash is included in prepaid expenses and other in our consolidated balance sheets.