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) Income
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, 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, 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)
Beginning balance, shareholders' equity at Dec. 31, 2024	22,228						881	13	1	2,417		19,361						(445)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,626											1,626
Other comprehensive income, net of tax	401																	401
Repurchased shares of Class A common stock		(2,148)						(1)			(2,147)
Cash dividends declared		(72)	(6)										(72)	(6)
Preferred stock dividends declared:				(14)	(21)	(8)									(14)	(21)	(8)
Ending balance, shareholders' equity at Sep. 30, 2025	21,986						881	12	1	270		20,866						(44)
Beginning balance, shareholders' equity at Jun. 30, 2025	22,296						881	12	1	1,179		20,337						(114)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	568											568
Other comprehensive income, net of tax	70																	70
Repurchased shares of Class A common stock		(909)									$ (909)
Cash dividends declared		$ (23)	$ (2)										$ (23)	$ (2)
Preferred stock dividends declared:				$ (5)	$ (7)	$ (2)									$ (5)	$ (7)	$ (2)
Ending balance, shareholders' equity at Sep. 30, 2025	$ 21,986						$ 881	$ 12	$ 1	$ 270		$ 20,866						$ (44)