Consolidated Statements of Equity - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interests
Beginning balance at Dec. 31, 2020	$ 18,573	$ 9,762	$ 216	$ (10,665)	$ 16,552	$ 2,996	$ (288)	$ 0
Increase (Decrease) in Stockholders' Equity
Net income	2,322					2,322
Other comprehensive income, net of tax	80						80
Dividends on common stock	(38)					(38)
Dividends on preferred stock	(800)					(800)
Shareholder warrants exercised	7				7
Issuance of common stock and other, net	191		1		190
Purchases of treasury stock	(8)			(8)
Ending balance at Dec. 31, 2021	20,327	9,762	217	(10,673)	16,749	4,480	(208)	0
Increase (Decrease) in Stockholders' Equity
Net income	13,304					13,304
Other comprehensive income, net of tax	403						403
Dividends on common stock	(485)					(485)
Dividends on preferred stock	(800)					(800)
Shareholder warrants exercised	254		2		252
Options Exercised	27				27
Issuance of common stock and other, net	154		1		153
Purchases of treasury stock	(3,099)			(3,099)
Ending balance at Dec. 31, 2022	30,085	9,762	220	(13,772)	17,181	16,499	195	0
Increase (Decrease) in Stockholders' Equity
Net income	4,696					4,696
Other comprehensive income, net of tax	80						80
Dividends on common stock	(646)					(646)
Dividends on preferred stock	(736)					(736)
Preferred stock redemption – face value	(1,511)	(1,511)
Preferred stock redemption – premium	(151)					(151)
Preferred stock redemption – amortization of carrying value	0	36				(36)
Shareholder warrants exercised	99		1		98
Options Exercised	13				13
Issuance of common stock and other, net	131		1		130
Purchases of treasury stock	(1,810)			(1,810)
Noncontrolling interest contributions, net	99							99
Ending balance at Dec. 31, 2023	$ 30,349	$ 8,287	$ 222	$ (15,582)	$ 17,422	$ 19,626	$ 275	$ 99