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)	757	730	0	0	0	730	0	0	27
Other comprehensive income (loss)	(14)	(14)	0	0	0	0	(14)	0	0
Cash dividends – common stock	(996)	(996)	0	0	0	(996)	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	31	31	0	1	30	0	0	0	0
Contributions from noncontrolling interests	6	0	0	0	0	0	0	0	6
Other	(7)	(8)	0	0	0	(8)	0	0	1
Net increase (decrease) in equity	(318)	(257)	0	1	30	(274)	(14)	0	(61)
Period End at Jun. 30, 2021	14,265	11,512	35	1,249	24,401	(13,022)	(110)	(1,041)	2,753
Period Start at Mar. 31, 2021	14,473	11,702	35	1,249	24,384	(12,825)	(100)	(1,041)	2,771
Net income (loss)	322	304	0	0	0	304	0	0	18
Other comprehensive income (loss)	(10)	(10)	0	0	0	0	(10)	0	0
Cash dividends – common stock	(498)	(498)	0	0	0	(498)	0	0	0
Dividends and distributions to noncontrolling interests	(41)	0	0	0	0	0	0	0	(41)
Stock-based compensation and related common stock issuances, net of tax	20	20	0	0	20	0	0	0	0
Contributions from noncontrolling interests	4	0	0	0	0	0	0	0	4
Other	(5)	(6)	0	0	(3)	(3)	0	0	1
Net increase (decrease) in equity	(208)	(190)	0	0	17	(197)	(10)	0	(18)
Period End at Jun. 30, 2021	14,265	11,512	35	1,249	24,401	(13,022)	(110)	(1,041)	2,753
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	(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	(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