Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Class A	Class B	Series A	Series B	Series C	Preferred Stock	Common Stock Class A	Common Stock Class B	Additional Paid in Capital	Additional Paid in Capital Class A	Retained Earnings	Retained Earnings Class A	Retained Earnings Class B	Retained Earnings Series A	Retained Earnings Series B	Retained Earnings Series C	Accumulated Other Comprehensive Loss
Beginning balance, shareholders' equity at Dec. 31, 2022	$ 9,662						$ 881	$ 14	$ 1	$ 4,109		$ 5,392						$ (735)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	10,952											10,952
Other comprehensive income (loss), net of tax	(145)																	(145)
Stock based compensation	(3)									(3)
Cash dividends declared		$ (31)	$ (2)										$ (31)	$ (2)
Preferred stock dividends declared:				$ (14)	$ (22)	$ (8)									$ (14)	$ (22)	$ (8)
Ending balance, shareholders' equity at Sep. 30, 2023	20,389						881	14	1	4,106		16,267						(880)
Beginning balance, shareholders' equity at Jun. 30, 2023	19,771						881	14	1	4,106		15,541						(772)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	752											752
Other comprehensive income (loss), net of tax	(108)																	(108)
Cash dividends declared		(10)											(10)
Preferred stock dividends declared:				(5)	(8)	(3)									(5)	(8)	(3)
Ending balance, shareholders' equity at Sep. 30, 2023	20,389						881	14	1	4,106		16,267						(880)
Beginning balance, shareholders' equity at Dec. 31, 2023	21,255						881	14	1	4,108		16,742						(491)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,077											2,077
Other comprehensive income (loss), net of tax	332																	332
Stock based compensation	(13)									(13)
Repurchased shares of Class A common stock		(707)						(1)			$ (706)
Cash dividends declared		(65)	(5)										(65)	(5)
Preferred stock dividends declared:				(14)	(24)	(8)									(14)	(24)	(8)
Ending balance, shareholders' equity at Sep. 30, 2024	22,828						881	13	1	3,389		18,703						(159)
Beginning balance, shareholders' equity at Jun. 30, 2024	22,487						881	14	1	4,099		18,102						(610)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	639											639
Other comprehensive income (loss), net of tax	451																	451
Stock based compensation	(4)									(4)
Repurchased shares of Class A common stock		(707)						(1)			$ (706)
Cash dividends declared		$ (21)	$ (2)										$ (21)	$ (2)
Preferred stock dividends declared:				$ (5)	$ (8)	$ (2)									$ (5)	$ (8)	$ (2)
Ending balance, shareholders' equity at Sep. 30, 2024	$ 22,828						$ 881	$ 13	$ 1	$ 3,389		$ 18,703						$ (159)