Consolidated Statement of Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Total Stockholders’ Equity	Preferred Stock	Common Stock	Capital in Excess of Par Value	Retained Deficit	AOCI*	Treasury Stock	Noncontrolling Interests
Period Start at Dec. 31, 2021	$ 14,101	$ 11,423	$ 35	$ 1,250	$ 24,449	$ (13,237)	$ (33)	$ (1,041)	$ 2,678
Net income (loss)	799	780	0	0	0	780	0	0	19
Other comprehensive income (loss)	10	10	0	0	0	0	10	0	0
Cash dividends – common stock ($0.895 per share)	(1,035)	(1,035)	0	0	0	(1,035)	0	0	0
Dividends and distributions to noncontrolling interests	(95)	0	0	0	0	0	0	0	(95)
Stock-based compensation and related common stock issuances, net of tax	54	54	0	3	51	0	0	0	0
Contributions from noncontrolling interests	8	0	0	0	0	0	0	0	8
Other	(6)	(6)	0	0	0	(6)	0	0	0
Net increase (decrease) in equity	(265)	(197)	0	3	51	(261)	10	0	(68)
Period End at Jun. 30, 2022	13,836	11,226	35	1,253	24,500	(13,498)	(23)	(1,041)	2,610
Period Start at Mar. 31, 2022	13,971	11,316	35	1,252	24,476	(13,378)	(28)	(1,041)	2,655
Net income (loss)	407	400	0	0	0	400	0	0	7
Other comprehensive income (loss)	5	5	0	0	0	0	5	0	0
Cash dividends – common stock ($0.895 per share)	(517)	(517)	0	0	0	(517)	0	0	0
Dividends and distributions to noncontrolling interests	(58)	0	0	0	0	0	0	0	(58)
Stock-based compensation and related common stock issuances, net of tax	25	25	0	1	24	0	0	0	0
Contributions from noncontrolling interests	5	0	0	0	0	0	0	0	5
Other	(2)	(3)	0	0	0	(3)	0	0	1
Net increase (decrease) in equity	(135)	(90)	0	1	24	(120)	5	0	(45)
Period End at Jun. 30, 2022	13,836	11,226	35	1,253	24,500	(13,498)	(23)	(1,041)	2,610
Period Start at Dec. 31, 2022	14,045	11,485	35	1,253	24,542	(13,271)	(24)	(1,050)	2,560
Net income (loss)	1,451	1,387	0	0	0	1,387	0	0	64
Other comprehensive income (loss)	36	36	0	0	0	0	36	0	0
Cash dividends – common stock ($0.895 per share)	(1,091)	(1,091)	0	0	0	(1,091)	0	0	0
Dividends and distributions to noncontrolling interests	(112)	0	0	0	0	0	0	0	(112)
Stock-based compensation and related common stock issuances, net of tax	(1)	(1)	0	3	(4)	0	0	0	0
Contributions from noncontrolling interests	18	0	0	0	0	0	0	0	18
Purchases of treasury stock	(130)	(130)	0	0	0	0	0	(130)	0
Other	(7)	(7)	0	0	0	(7)	0	0	0
Net increase (decrease) in equity	164	194	0	3	(4)	289	36	(130)	(30)
Period End at Jun. 30, 2023	14,209	11,679	35	1,256	24,538	(12,982)	12	(1,180)	2,530
Period Start at Mar. 31, 2023	14,323	11,785	35	1,256	24,516	(12,895)	(3)	(1,124)	2,538
Net income (loss)	494	460	0	0	0	460	0	0	34
Other comprehensive income (loss)	15	15	0	0	0	0	15	0	0
Cash dividends – common stock ($0.895 per share)	(545)	(545)	0	0	0	(545)	0	0	0
Dividends and distributions to noncontrolling interests	(58)	0	0	0	0	0	0	0	(58)
Stock-based compensation and related common stock issuances, net of tax	22	22	0	0	22	0	0	0	0
Contributions from noncontrolling interests	15	0	0	0	0	0	0	0	15
Purchases of treasury stock	(56)	(56)	0	0	0	0	0	(56)	0
Other	(1)	(2)	0	0	0	(2)	0	0	1
Net increase (decrease) in equity	(114)	(106)	0	0	22	(87)	15	(56)	(8)
Period End at Jun. 30, 2023	$ 14,209	$ 11,679	$ 35	$ 1,256	$ 24,538	$ (12,982)	$ 12	$ (1,180)	$ 2,530