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, 2020	$ 14,583	$ 11,769	$ 35	$ 1,248	$ 24,371	$ (12,748)	$ (96)	$ (1,041)	$ 2,814
Net income (loss)	930	895	0	0	0	895	0	0	35
Other comprehensive income (loss)	(13)	(13)	0	0	0	0	(13)	0	0
Cash dividends – common stock ($1.275 per share)	(1,494)	(1,494)	0	0	0	(1,494)	0	0	0
Dividends and distributions to noncontrolling interests	(135)	0	0	0	0	0	0	0	(135)
Stock-based compensation and related common stock issuances, net of tax	54	54	0	1	53	0	0	0	0
Purchase of partial interest in consolidated subsidiary	(3)	0	0	0	0	0	0	0	(3)
Contributions from noncontrolling interests	9	0	0	0	0	0	0	0	9
Other	(12)	(13)	0	0	1	(14)	0	0	1
Net increase (decrease) in equity	(664)	(571)	0	1	54	(613)	(13)	0	(93)
Period End at Sep. 30, 2021	13,919	11,198	35	1,249	24,425	(13,361)	(109)	(1,041)	2,721
Period Start at Jun. 30, 2021	14,265	11,512	35	1,249	24,401	(13,022)	(110)	(1,041)	2,753
Net income (loss)	173	165	0	0	0	165	0	0	8
Other comprehensive income (loss)	1	1	0	0	0	0	1	0	0
Cash dividends – common stock ($1.275 per share)	(498)	(498)	0	0	0	(498)	0	0	0
Dividends and distributions to noncontrolling interests	(40)	0	0	0	0	0	0	0	(40)
Stock-based compensation and related common stock issuances, net of tax	23	23	0	0	23	0	0	0	0
Purchase of partial interest in consolidated subsidiary	(3)	0	0	0	0	0	0	0	(3)
Contributions from noncontrolling interests	3	0	0	0	0	0	0	0	3
Other	(5)	(5)	0	0	1	(6)	0	0	0
Net increase (decrease) in equity	(346)	(314)	0	0	24	(339)	1	0	(32)
Period End at Sep. 30, 2021	13,919	11,198	35	1,249	24,425	(13,361)	(109)	(1,041)	2,721
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)	1,420	1,380	0	0	0	1,380	0	0	40
Other comprehensive income (loss)	6	6	0	0	0	0	6	0	0
Cash dividends – common stock ($1.275 per share)	(1,553)	(1,553)	0	0	0	(1,553)	0	0	0
Dividends and distributions to noncontrolling interests	(141)	0	0	0	0	0	0	0	(141)
Stock-based compensation and related common stock issuances, net of tax	82	82	0	3	79	0	0	0	0
Contributions from noncontrolling interests	15	0	0	0	0	0	0	0	15
Purchase of treasury stock	(9)	(9)	0	0	0	0	0	(9)	0
Other	(11)	(10)	0	0	(1)	(9)	0	0	(1)
Net increase (decrease) in equity	(191)	(104)	0	3	78	(182)	6	(9)	(87)
Period End at Sep. 30, 2022	13,910	11,319	35	1,253	24,527	(13,419)	(27)	(1,050)	2,591
Period Start at Jun. 30, 2022	13,836	11,226	35	1,253	24,500	(13,498)	(23)	(1,041)	2,610
Net income (loss)	621	600	0	0	0	600	0	0	21
Other comprehensive income (loss)	(4)	(4)	0	0	0	0	(4)	0	0
Cash dividends – common stock ($1.275 per share)	(518)	(518)	0	0	0	(518)	0	0	0
Dividends and distributions to noncontrolling interests	(46)	0	0	0	0	0	0	0	(46)
Stock-based compensation and related common stock issuances, net of tax	28	28	0	0	28	0	0	0	0
Contributions from noncontrolling interests	7	0	0	0	0	0	0	0	7
Purchase of treasury stock	(9)	(9)	0	0	0	0	0	(9)	0
Other	(5)	(4)	0	0	(1)	(3)	0	0	(1)
Net increase (decrease) in equity	74	93	0	0	27	79	(4)	(9)	(19)
Period End at Sep. 30, 2022	$ 13,910	$ 11,319	$ 35	$ 1,253	$ 24,527	$ (13,419)	$ (27)	$ (1,050)	$ 2,591