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, 2022	$ 14,045	$ 35	$ 1,253	$ 24,542	$ (13,271)	$ (24)	$ (1,050)	$ 11,485	$ 2,560
Net income (loss)	957	0	0	0	927	0	0	927	30
Other Comprehensive Income (Loss), Net of Tax	21	0	0	0	0	21	0	21	0
Dividends, Common Stock, Cash	(546)	0	0	0	(546)	0	0	(546)	0
Dividends and distributions to noncontrolling interests	(54)	0	0	0	0	0	0	0	(54)
Stock-based compensation and related common stock issuances, net of tax	(23)	0	3	(26)	0	0	0	(23)	0
Contributions from noncontrolling interests	3	0	0	0	0	0	0	0	3
Purchases of treasury stock	(74)	0	0	0	0	0	(74)	(74)	0
Other	(6)	0	0	0	(5)	0	0	(5)	(1)
Net increase (decrease) in equity	278	0	3	(26)	376	21	(74)	300	(22)
Ending balance at Mar. 31, 2023	14,323	35	1,256	24,516	(12,895)	(3)	(1,124)	11,785	2,538
Beginning balance at Dec. 31, 2023	14,891	35	1,256	24,578	(12,287)	0	(1,180)	12,402	2,489
Net income (loss)	662	0	0	0	632	0	0	632	30
Other Comprehensive Income (Loss), Net of Tax	10	0	0	0	0	10	0	10	0
Dividends, Common Stock, Cash	(579)	0	0	0	(579)	0	0	(579)	0
Dividends and distributions to noncontrolling interests	(64)	0	0	0	0	0	0	0	(64)
Stock-based compensation and related common stock issuances, net of tax	(12)	0	2	(14)	0	0	0	(12)	0
Contributions from noncontrolling interests	26	0	0	0	0	0	0	0	26
Purchases of treasury stock	0
Other	(4)	0	0	0	(4)	0	0	(4)	0
Net increase (decrease) in equity	39	0	2	(14)	49	10	0	47	(8)
Ending balance at Mar. 31, 2024	$ 14,930	$ 35	$ 1,258	$ 24,564	$ (12,238)	$ 10	$ (1,180)	$ 12,449	$ 2,481