Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Senior Preferred	Preferred	Common	Accumulated Deficit	Accumulated Other Comprehensive Income	Treasury Stock
Beginning balance (shares) at Dec. 31, 2022		1	556	1,158
Beginning balance at Dec. 31, 2022	$ 60,277	$ 120,836	$ 19,130	$ 687	$ (73,011)	$ 35	$ (7,400)
Comprehensive income:
Net income	3,772				3,772
Other comprehensive income, net of tax effect:
Changes in net unrealized gains on available-for-sale securities, net of taxes	2					2
Other, net of taxes	(2)					(2)
Total comprehensive income	3,772
Ending balance (shares) at Mar. 31, 2023		1	556	1,158
Ending balance at Mar. 31, 2023	64,049	$ 120,836	$ 19,130	$ 687	(69,239)	35	(7,400)
Beginning balance (shares) at Dec. 31, 2023		1	556	1,158
Beginning balance at Dec. 31, 2023	77,682	$ 120,836	$ 19,130	$ 687	(55,603)	32	(7,400)
Comprehensive income:
Net income	4,320				4,320
Other comprehensive income, net of tax effect:
Changes in net unrealized gains on available-for-sale securities, net of taxes	6					6
Other, net of taxes	(2)					(2)
Total comprehensive income	4,324
Ending balance (shares) at Mar. 31, 2024		1	556	1,158
Ending balance at Mar. 31, 2024	$ 82,006	$ 120,836	$ 19,130	$ 687	$ (51,283)	$ 36	$ (7,400)