Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Preferred Shares	Common Shares	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Series D Preferred Stock	Series D Preferred Stock Retained Earnings
Beginning Balance at Dec. 31, 2023	$ 28,057	$ 0	$ 145	$ 11,372	$ (3,072)	$ 19,612
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,452					5,452
Other comprehensive income (loss)	(128)				(128)	0
Repurchase of common shares	(2,903)		(2)	(200)		(2,701)
Other changes	101			160		(59)
Cash dividends declared preferred							$ (29)	$ (29)
Cash dividends declared common	(1,010)					(1,010)
Ending Balance at Jun. 30, 2024	29,540	0	143	11,332	(3,200)	21,265
Beginning Balance at Mar. 31, 2024	28,764	0	144	11,354	(3,155)	20,421
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,015					3,015
Other comprehensive income (loss)	(45)				(45)	0
Repurchase of common shares	(1,767)		(1)	(117)		(1,649)
Other changes	91			95		(4)
Cash dividends declared preferred							(15)	(15)
Cash dividends declared common	(503)					(503)
Ending Balance at Jun. 30, 2024	29,540	0	143	11,332	(3,200)	21,265
Beginning Balance at Dec. 31, 2024	30,264	0	141	11,370	(3,395)	22,148
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,469					5,469
Other comprehensive income (loss)	147				147	0
Repurchase of common shares	(2,074)		(1)	(114)		(1,959)
Other changes	(314)			(204)		(110)
Cash dividends declared preferred							(29)	(29)
Cash dividends declared common	(1,152)					(1,152)
Ending Balance at Jun. 30, 2025	32,311	0	140	11,052	(3,248)	24,367
Beginning Balance at Mar. 31, 2025	31,202	0	140	11,037	(3,366)	23,391
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,885					2,885
Other comprehensive income (loss)	118				118	0
Repurchase of common shares	(1,396)		0	(78)		(1,318)
Other changes	93			93		0
Cash dividends declared preferred							$ (15)	$ (15)
Cash dividends declared common	(576)					(576)
Ending Balance at Jun. 30, 2025	$ 32,311	$ 0	$ 140	$ 11,052	$ (3,248)	$ 24,367