Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income (loss)	$ 967	$ (622)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization expense	606	578
Loss on early retirement of debt	50	0
Deferred income tax benefit	(234)	(239)
Changes in current assets and current liabilities	(722)	184
Changes in deferred charges and credits and other operating activities, net	(79)	47
Net cash provided by (used in) operating activities	588	(52)
Cash flows from investing activities:
Investments in nonconsolidated joint ventures	0	(12)
Other investing activities, net	2	2
Net cash used in investing activities	(841)	(580)
Cash flows from financing activities:
Premiums on early retirement of debt	(48)	0
Purchases of common stock for treasury	(144)	(14)
Common stock dividend payments	(401)	(400)
Contributions from noncontrolling interests	165	0
Other financing activities, net	(10)	(1)
Net cash used in financing activities	(1,228)	(439)
Effect of foreign exchange rate changes on cash	(3)	12
Net decrease in cash and cash equivalents	(1,484)	(1,059)
Cash and cash equivalents at beginning of period	4,122	3,313
Cash and cash equivalents at end of period	2,638	2,254
Excluding Variable Interest Entities (VIEs) [Member]
Cash flows from investing activities:
Capital expenditures	(152)	(160)
Deferred turnaround and catalyst cost expenditures	(453)	(230)
Cash flows from financing activities:
Proceeds from debt issuances and borrowings	939	0
Repayments of debt and finance lease obligations	(1,738)	(31)
Diamond Green Diesel Holdings LLC (DGD) [Member]
Cash flows from investing activities:
Capital expenditures	(219)	(153)
Deferred turnaround and catalyst cost expenditures	(6)	(1)
Cash flows from financing activities:
Proceeds from debt issuances and borrowings	99	0
Repayments of debt and finance lease obligations	(102)	0
Other VIEs [Member]
Cash flows from investing activities:
Capital expenditures	(13)	(26)
Cash flows from financing activities:
Proceeds from debt issuances and borrowings	28	8
Repayments of debt and finance lease obligations	$ (16)	$ (1)