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	8,766				8,766
Other comprehensive income, net of tax effect:
Changes in net unrealized gains (losses) on available-for-sale securities, net of taxes	4					4
Other, net of taxes	(3)					(3)
Total comprehensive income	8,767
Ending balance (shares) at Jun. 30, 2023		1	556	1,158
Ending balance at Jun. 30, 2023	69,044	$ 120,836	$ 19,130	$ 687	(64,245)	36	(7,400)
Beginning balance (shares) at Mar. 31, 2023		1	556	1,158
Beginning balance at Mar. 31, 2023	64,049	$ 120,836	$ 19,130	$ 687	(69,239)	35	(7,400)
Comprehensive income:
Net income	4,994				4,994
Other comprehensive income, net of tax effect:
Changes in net unrealized gains (losses) on available-for-sale securities, net of taxes	2					2
Other, net of taxes	(1)					(1)
Total comprehensive income	4,995
Ending balance (shares) at Jun. 30, 2023		1	556	1,158
Ending balance at Jun. 30, 2023	69,044	$ 120,836	$ 19,130	$ 687	(64,245)	36	(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	8,804				8,804
Other comprehensive income, net of tax effect:
Changes in net unrealized gains (losses) on available-for-sale securities, net of taxes	(1)					(1)
Reclassification adjustment for gains included in net income, net of taxes	1					1
Other, net of taxes	(3)					(3)
Total comprehensive income	8,801
Ending balance (shares) at Jun. 30, 2024		1	556	1,158
Ending balance at Jun. 30, 2024	86,483	$ 120,836	$ 19,130	$ 687	(46,799)	29	(7,400)
Beginning balance (shares) at Mar. 31, 2024		1	556	1,158
Beginning balance at Mar. 31, 2024	82,006	$ 120,836	$ 19,130	$ 687	(51,283)	36	(7,400)
Comprehensive income:
Net income	4,484				4,484
Other comprehensive income, net of tax effect:
Changes in net unrealized gains (losses) on available-for-sale securities, net of taxes	(7)					(7)
Reclassification adjustment for gains included in net income, net of taxes	1					1
Other, net of taxes	(1)					(1)
Total comprehensive income	4,477
Ending balance (shares) at Jun. 30, 2024		1	556	1,158
Ending balance at Jun. 30, 2024	$ 86,483	$ 120,836	$ 19,130	$ 687	$ (46,799)	$ 29	$ (7,400)