CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Total Shareholders' Equity	Common Stock	Treasury Stock	Reinvested Earnings	Accumulated Other Comprehensive Income (Loss)	Non- controlling Interest - Preferred Stock  of Subsidiary
Beginning balance (in shares) at Dec. 31, 2021			1,985,400,540
Beginning balance at Dec. 31, 2021	$ 21,223	$ 20,971	$ 35,129	$ (4,854)	$ (9,284)	$ (20)	$ 252
Beginning balance, treasury (in shares) at Dec. 31, 2021				477,743,590
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	478	478			478
Other comprehensive income (loss)	0
Common stock issued, net (in shares)			2,072,050
Common stock issued, net	(407)	(407)	$ (407)
Treasury stock disposition (in shares)				(40,000,000)
Treasury stock disposition	407	407		$ 407
Stock-based compensation amortization	4	4	$ 4
Preferred stock dividend requirement of subsidiary in arrears	(59)	(59)			(59)
Preferred stock dividend requirement of subsidiary	(2)	(2)			(2)
Ending balance (in shares) at Mar. 31, 2022			1,987,472,590
Ending balance at Mar. 31, 2022	$ 21,644	21,392	$ 34,726	$ (4,447)	(8,867)	(20)	252
Ending balance, treasury (in shares) at Mar. 31, 2022				437,743,590
Beginning balance (in shares) at Dec. 31, 2022	1,987,784,948		1,987,784,948
Beginning balance at Dec. 31, 2022	$ 23,075	22,823	$ 32,887	$ (2,517)	(7,542)	(5)	252
Beginning balance, treasury (in shares) at Dec. 31, 2022	247,743,590			247,743,590
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	$ 572	572			572
Other comprehensive income (loss)	5	5				5
Common stock issued, net (in shares)			7,989,135
Common stock issued, net	(610)	(610)	$ (610)
Treasury stock disposition (in shares)				(60,000,000)
Treasury stock disposition	610	610		$ 610
Stock-based compensation amortization	(63)	(63)	$ (63)
Preferred stock dividend requirement of subsidiary	$ (3)	(3)			(3)
Ending balance (in shares) at Mar. 31, 2023	1,995,774,083		1,995,774,083
Ending balance at Mar. 31, 2023	$ 23,586	$ 23,334	$ 32,214	$ (1,907)	$ (6,973)	$ 0	$ 252
Ending balance, treasury (in shares) at Mar. 31, 2023	187,743,590			187,743,590