Consolidated Statement of Changes in Equity - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Capital in Excess of Par Value	Retained Deficit	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total Stockholders' Equity	Noncontrolling Interests
Beginning balance at Dec. 31, 2020	$ 14,583	$ 35	$ 1,248	$ 24,371	$ (12,748)	$ (96)	$ (1,041)	$ 11,769	$ 2,814
Net income (loss)	1,562	0	0	0	1,517	0	0	1,517	45
Other comprehensive income (loss)	63	0	0	0	0	63	0	63	0
Dividends, Common Stock, Cash	(1,992)	0	0	0	(1,992)	0	0	(1,992)	0
Dividends and distributions to noncontrolling interests	(187)	0	0	0	0	0	0	0	(187)
Stock-based compensation and related common stock issuances, net of tax	80	0	2	78	0	0	0	80	0
Contributions from noncontrolling interests	9	0	0	0	0	0	0	0	9
Purchases of treasury stock	0
Other	(17)	0	0	0	(14)	0	0	(14)	(3)
Net increase (decrease) in equity	(482)	0	2	78	(489)	63	0	(346)	(136)
Ending balance at Dec. 31, 2021	14,101	35	1,250	24,449	(13,237)	(33)	(1,041)	11,423	2,678
Net income (loss)	2,117	0	0	0	2,049	0	0	2,049	68
Other comprehensive income (loss)	9	0	0	0	0	9	0	9	0
Dividends, Common Stock, Cash	(2,071)	0	0	0	(2,071)	0	0	(2,071)	0
Dividends and distributions to noncontrolling interests	(204)	0	0	0	0	0	0	0	(204)
Stock-based compensation and related common stock issuances, net of tax	96	0	3	93	0	0	0	96	0
Contributions from noncontrolling interests	18	0	0	0	0	0	0	0	18
Purchases of treasury stock	(9)	0	0	0	0	0	(9)	(9)	0
Other	(12)	0	0	0	(12)	0	0	(12)	0
Net increase (decrease) in equity	(56)	0	3	93	(34)	9	(9)	62	(118)
Ending balance at Dec. 31, 2022	14,045	35	1,253	24,542	(13,271)	(24)	(1,050)	11,485	2,560
Net income (loss)	3,303	0	0	0	3,179	0	0	3,179	124
Other comprehensive income (loss)	25	0	0	0	0	25	0	25	0
Dividends, Common Stock, Cash	(2,179)	0	0	0	(2,179)	0	0	(2,179)	0
Dividends and distributions to noncontrolling interests	(213)	0	0	0	0	0	0	0	(213)
Stock-based compensation and related common stock issuances, net of tax	38	0	3	35	0	0	0	38	0
Contributions from noncontrolling interests	18	0	0	0	0	0	0	0	18
Purchases of treasury stock	(130)	0	0	0	0	0	(130)	(130)	0
Other	(16)	0	0	1	(16)	(1)	0	(16)	0
Net increase (decrease) in equity	846	0	3	36	984	24	(130)	917	(71)
Ending balance at Dec. 31, 2023	$ 14,891	$ 35	$ 1,256	$ 24,578	$ (12,287)	$ 0	$ (1,180)	$ 12,402	$ 2,489