CONSOLIDATED STATEMENT OF EQUITY (UNAUDITED) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Capital Stock Expense	Accumulated Other Comprehensive Income/(Loss)	Non- controlling Interest
Beginning balance (shares) at Dec. 31, 2021		354,000,000
Beginning balance at Dec. 31, 2021	$ 20,336	$ 37	$ 9,710	$ 11,445	$ (1,038)	$ (122)	$ 5	$ 299
Beginning balance (shares) at Dec. 31, 2021					23,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	554			602				(48)
Common stock dividends	(280)			(280)
Issuance of common shares - public offering	1					1
Issuance of common shares for stock plans	18		18
Other comprehensive income	0
Distributions to noncontrolling interest	(6)							(6)
Ending balance (shares) at Mar. 31, 2022		354,000,000
Ending balance at Mar. 31, 2022	20,623	$ 37	9,728	11,767	$ (1,038)	(121)	5	245
Ending balance (shares) at Mar. 31, 2022					23,000,000
Beginning balance (shares) at Dec. 31, 2021		354,000,000
Beginning balance at Dec. 31, 2021	$ 20,336	$ 37	9,710	11,445	$ (1,038)	(122)	5	299
Beginning balance (shares) at Dec. 31, 2021					23,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchases (in shares)	(8,730,766)
Ending balance (shares) at Dec. 31, 2022		355,000,000
Ending balance at Dec. 31, 2022	$ 20,889	$ 37	9,803	11,985	$ (1,038)	(122)	22	202
Ending balance (shares) at Dec. 31, 2022					23,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,430			1,433				(3)
Common stock dividends	(288)			(288)
Issuance of common shares for stock plans	15		15
Common stock repurchases (in shares)		(9,000,000)			9,000,000
Common stock repurchases	(1,008)		(200)		$ (808)
Other comprehensive income	4						4
Distributions to noncontrolling interest	(4)							(4)
Disposal of Clean Energy Businesses	(195)							(195)
Ending balance (shares) at Mar. 31, 2023		346,000,000
Ending balance at Mar. 31, 2023	$ 20,843	$ 37	$ 9,618	$ 13,130	$ (1,846)	$ (122)	$ 26	$ 0
Ending balance (shares) at Mar. 31, 2023					32,000,000