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	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	10,200										10,200
Other comprehensive loss, net of tax	(37)																(37)
Stock based compensation	(3)									(3)
Cash dividends declared		$ (20)	$ (2)									$ (20)	$ (2)
Preferred stock dividends declared:				$ (9)	$ (14)	$ (6)								$ (9)	$ (14)	$ (6)
Ending balance, shareholders' equity at Jun. 30, 2023	19,771						881	14	1	4,106	15,541						(772)
Beginning balance, shareholders' equity at Mar. 31, 2023	19,216						881	14	1	4,104	14,885						(669)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	682										682
Other comprehensive loss, net of tax	(103)																(103)
Stock based compensation	2									2
Cash dividends declared		(10)	(1)									(10)	(1)
Preferred stock dividends declared:				(5)	(7)	(3)								(5)	(7)	(3)
Ending balance, shareholders' equity at Jun. 30, 2023	19,771						881	14	1	4,106	15,541						(772)
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	1,438										1,438
Other comprehensive loss, net of tax	(119)																(119)
Stock based compensation	(9)									(9)
Cash dividends declared		(44)	(3)									(44)	(3)
Preferred stock dividends declared:				(9)	(16)	(6)								(9)	(16)	(6)
Ending balance, shareholders' equity at Jun. 30, 2024	22,487						881	14	1	4,099	18,102						(610)
Beginning balance, shareholders' equity at Mar. 31, 2024	21,848						881	14	1	4,099	17,435						(582)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	707										707
Other comprehensive loss, net of tax	(28)																(28)
Cash dividends declared		$ (22)	$ (2)									$ (22)	$ (2)
Preferred stock dividends declared:				$ (5)	$ (8)	$ (3)								$ (5)	$ (8)	$ (3)
Ending balance, shareholders' equity at Jun. 30, 2024	$ 22,487						$ 881	$ 14	$ 1	$ 4,099	$ 18,102						$ (610)