Consolidated Statements of Equity and Redeemable Noncontrolling Interest (Consolidated Statements of Equity) - USD ($) $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interests
Beginning balance at Dec. 31, 2019	$ 42,139	$ 10	$ (15,143)	$ 33,157	$ 15,990	$ (320)	$ 8,445
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(10,058)				(9,826)		(232)
Dividends declared on common stock	(1,514)				(1,514)
Distributions to noncontrolling interests	(1,163)						(1,163)
Other comprehensive income (loss)	(192)					(192)
Shares issued - stock based compensation				92
Shares returned - stock based compensation			(14)
Share-based compensation	86						8
Equity transactions of MPLX	(46)			(41)			(5)
Ending balance at Dec. 31, 2020	29,252	10	(15,157)	33,208	4,650	(512)	7,053
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	10,901				9,738		1,163
Dividends declared on common stock	(1,483)				(1,483)
Distributions to noncontrolling interests	(1,349)						(1,349)
Other comprehensive income (loss)	445					445
Shares repurchased	(4,740)		(4,740)
Shares issued - stock based compensation				147
Shares returned - stock based compensation			7
Share-based compensation	144						4
Equity transactions of MPLX	(554)			(93)			(461)
Ending balance at Dec. 31, 2021	32,616	10	(19,904)	33,262	12,905	(67)	6,410
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	15,962				14,516		1,446
Dividends declared on common stock	(1,279)				(1,279)
Distributions to noncontrolling interests	(1,129)						(1,129)
Other comprehensive income (loss)	69					69
Shares repurchased	(11,933)		(11,933)
Shares issued - stock based compensation				260
Shares returned - stock based compensation			(4)
Share-based compensation	260						4
Equity transactions of MPLX	(447)			(120)			(327)
Ending balance at Dec. 31, 2022	$ 34,119	$ 10	$ (31,841)	$ 33,402	$ 26,142	$ 2	$ 6,404