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	2,437					2,437
Other comprehensive income (loss)	(83)				(83)	0
Repurchase of common shares	(1,136)		(1)	(83)		(1,052)
Other changes	10			65		(55)
Cash dividends declared preferred							$ (14)	$ (14)
Cash dividends declared common	(507)					(507)
Ending Balance at Mar. 31, 2024	28,764	0	144	11,354	(3,155)	20,421
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	2,584					2,584
Other comprehensive income (loss)	29				29	0
Repurchase of common shares	(678)		(1)	(36)		(641)
Other changes	(407)			(297)		(110)
Cash dividends declared preferred							$ (14)	$ (14)
Cash dividends declared common	(576)					(576)
Ending Balance at Mar. 31, 2025	$ 31,202	$ 0	$ 140	$ 11,037	$ (3,366)	$ 23,391