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, 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	12,848				12,848
Other comprehensive income, net of tax effect:
Changes in net unrealized gains (losses) on available-for-sale securities, net of taxes	3					3
Reclassification adjustment for (gains) losses included in net income (net of taxes of $0)	2					2
Other, net of taxes	(5)					(5)
Total comprehensive income	12,848
Ending balance (shares) at Sep. 30, 2024		1	556	1,158
Ending balance at Sep. 30, 2024	90,530	$ 120,836	$ 19,130	$ 687	(42,755)	32	(7,400)
Beginning balance (shares) at Jun. 30, 2024		1	556	1,158
Beginning balance at Jun. 30, 2024	86,483	$ 120,836	$ 19,130	$ 687	(46,799)	29	(7,400)
Comprehensive income:
Net income	4,044				4,044
Other comprehensive income, net of tax effect:
Changes in net unrealized gains (losses) on available-for-sale securities, net of taxes	4					4
Reclassification adjustment for (gains) losses included in net income (net of taxes of $0)	1					1
Other, net of taxes	(2)					(2)
Total comprehensive income	4,047
Ending balance (shares) at Sep. 30, 2024		1	556	1,158
Ending balance at Sep. 30, 2024	90,530	$ 120,836	$ 19,130	$ 687	(42,755)	32	(7,400)
Beginning balance (shares) at Dec. 31, 2024		1	556	1,158
Beginning balance at Dec. 31, 2024	94,657	$ 120,836	$ 19,130	$ 687	(38,625)	29	(7,400)
Comprehensive income:
Net income	10,837				10,837
Other comprehensive income, net of tax effect:
Changes in net unrealized gains (losses) on available-for-sale securities, net of taxes	(5)					(5)
Reclassification adjustment for (gains) losses included in net income (net of taxes of $0)	1					1
Other, net of taxes	(5)					(5)
Total comprehensive income	10,828
Ending balance (shares) at Sep. 30, 2025		1	556	1,158
Ending balance at Sep. 30, 2025	105,485	$ 120,836	$ 19,130	$ 687	(27,788)	20	(7,400)
Beginning balance (shares) at Jun. 30, 2025		1	556	1,158
Beginning balance at Jun. 30, 2025	101,636	$ 120,836	$ 19,130	$ 687	(31,647)	30	(7,400)
Comprehensive income:
Net income	3,859				3,859
Other comprehensive income, net of tax effect:
Changes in net unrealized gains (losses) on available-for-sale securities, net of taxes	(8)					(8)
Other, net of taxes	(2)					(2)
Total comprehensive income	3,849
Ending balance (shares) at Sep. 30, 2025		1	556	1,158
Ending balance at Sep. 30, 2025	$ 105,485	$ 120,836	$ 19,130	$ 687	$ (27,788)	$ 20	$ (7,400)