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
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock dividends per share (dollars per share)	$ 0.79
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)	1,427
Ending balance (shares) at Sep. 30, 2022		355,000,000
Ending balance at Sep. 30, 2022	20,976	$ 37	9,784	12,075	$ (1,038)	(121)	11	228
Ending balance (shares) at Sep. 30, 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
Beginning balance (shares) at Mar. 31, 2022		354,000,000
Beginning balance at Mar. 31, 2022	20,623	$ 37	9,728	11,767	$ (1,038)	(121)	5	245
Beginning balance (shares) at Mar. 31, 2022					23,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	254			255				(1)
Common stock dividends	(280)			(280)
Issuance of common shares for stock plans	29		29
Other comprehensive income (loss)	5						5
Distributions to noncontrolling interest	(10)							(10)
Ending balance (shares) at Jun. 30, 2022		354,000,000
Ending balance at Jun. 30, 2022	$ 20,621	$ 37	9,757	11,742	$ (1,038)	(121)	10	234
Ending balance (shares) at Jun. 30, 2022					23,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock dividends per share (dollars per share)	$ 0.79
Net income (loss)	$ 619			613				6
Common stock dividends	(280)			(280)
Issuance of common shares – public offering (shares)		1,000,000
Issuance of common shares - public offering	0
Issuance of common shares for stock plans	27		27
Other comprehensive income (loss)	1						1
Distributions to noncontrolling interest	(12)							(12)
Ending balance (shares) at Sep. 30, 2022		355,000,000
Ending balance at Sep. 30, 2022	$ 20,976	$ 37	9,784	12,075	$ (1,038)	(121)	11	228
Ending balance (shares) at Sep. 30, 2022					23,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock dividends per share (dollars per share)	$ 0.79
Beginning balance (shares) at Dec. 31, 2022		355,000,000
Beginning balance at Dec. 31, 2022	$ 20,889	$ 37	9,803	11,985	$ (1,038)	(122)	22	202
Beginning 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 (loss)	4						4
Distributions to noncontrolling interest	(4)							(4)
Disposal of the 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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock dividends per share (dollars per share)	$ 0.81
Beginning balance (shares) at Dec. 31, 2022		355,000,000
Beginning balance at Dec. 31, 2022	$ 20,889	$ 37	9,803	11,985	$ (1,038)	(122)	22	202
Beginning balance (shares) at Dec. 31, 2022					23,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,182
Ending balance (shares) at Sep. 30, 2023		345,000,000
Ending balance at Sep. 30, 2023	21,078	$ 37	9,834	13,321	$ (2,017)	(122)	25	0
Ending balance (shares) at Sep. 30, 2023					34,000,000
Beginning balance (shares) at Mar. 31, 2023		346,000,000
Beginning balance at Mar. 31, 2023	20,843	$ 37	9,618	13,130	$ (1,846)	(122)	26	0
Beginning balance (shares) at Mar. 31, 2023					32,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	226			226
Common stock dividends	(281)			(281)
Issuance of common shares for stock plans	$ 20		20
Common stock repurchases (in shares)	(1,812,497)	(2,000,000)			2,000,000
Common stock repurchases	$ (2)		169		$ (171)
Other comprehensive income (loss)	(1)						(1)
Ending balance (shares) at Jun. 30, 2023		344,000,000
Ending balance at Jun. 30, 2023	$ 20,805	$ 37	9,807	13,075	$ (2,017)	(122)	25	0
Ending balance (shares) at Jun. 30, 2023					34,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock dividends per share (dollars per share)	$ 0.81
Net income (loss)	$ 526			526
Common stock dividends	(280)			(280)
Issuance of common shares for stock plans (in shares)		1,000,000
Issuance of common shares for stock plans	27		27
Ending balance (shares) at Sep. 30, 2023		345,000,000
Ending balance at Sep. 30, 2023	$ 21,078	$ 37	$ 9,834	$ 13,321	$ (2,017)	$ (122)	$ 25	$ 0
Ending balance (shares) at Sep. 30, 2023					34,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock dividends per share (dollars per share)	$ 0.81