Consolidated Statement of Equity - 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
BALANCE AS OF BEGINNING OF PERIOD (in shares) at Dec. 31, 2020		342,000,000
BALANCE AS OF BEGINNING OF PERIOD at Dec. 31, 2020	$ 19,065	$ 36	$ 8,808	$ 11,178	$ (1,038)	$ (112)	$ (25)	$ 218
Beginning Balance (in shares) at Dec. 31, 2020					23,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,193			1,346				(153)
Common stock dividends	(1,079)			(1,079)
Issuance of common shares - public offering (in shares)		10,000,000
Issuance of common shares - public offering	766	$ 1	775			(10)
Issuance of common shares for stock plans (in shares)		2,000,000
Issuance of common shares for stock plans	127		127
Other comprehensive income	30						30
Distributions to noncontrolling interests	(23)							(23)
Net proceeds from sale of equity interest	257							257
BALANCE AS OF END OF PERIOD (in shares) at Dec. 31, 2021		354,000,000
BALANCE AS OF END OF PERIOD at Dec. 31, 2021	20,336	$ 37	9,710	11,445	$ (1,038)	(122)	5	299
Ending Balance (in shares) at Dec. 31, 2021					23,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,600			1,660				(60)
Common stock dividends	(1,120)			(1,120)
Issuance of common shares for stock plans (in shares)		1,000,000
Issuance of common shares for stock plans	93		93
Other comprehensive income	17						17
Distributions to noncontrolling interests	$ (37)							(37)
BALANCE AS OF END OF PERIOD (in shares) at Dec. 31, 2022	354,962,058	355,000,000
BALANCE AS OF END OF PERIOD at Dec. 31, 2022	$ 20,889	$ 37	9,803	11,985	$ (1,038)	(122)	22	202
Ending Balance (in shares) at Dec. 31, 2022	23,210,700				23,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 2,516			2,519				(3)
Common stock dividends	(1,127)			(1,127)
Issuance of common shares for stock plans (in shares)		1,000,000
Issuance of common shares for stock plans	89		89
Distributions to noncontrolling interests	$ (4)							(4)
Common stock repurchases (in shares)	(10,543,263)	(11,000,000)			11,000,000
Common stock repurchases	$ (1,010)		(31)		$ (979)
Disposal of Clean Energy Businesses	$ (195)							195
BALANCE AS OF END OF PERIOD (in shares) at Dec. 31, 2023	345,415,772	345,000,000
BALANCE AS OF END OF PERIOD at Dec. 31, 2023	$ 21,158	$ 37	$ 9,861	$ 13,377	$ (2,017)	$ (122)	$ 22	$ 0
Ending Balance (in shares) at Dec. 31, 2023	33,753,963				34,000,000