CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY - USD ($) $ in Millions	Total	Adoption of new accounting standard	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Retained Earnings Adoption of new accounting standard	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Balance at beginning of period at Dec. 31, 2023	$ 6,050	$ (1)	$ 107	$ 4	$ 4,692	$ 1,669	$ (1)	$ (235)	$ (187)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	436					355		81
Dividends declared:
Preferred stock	(2)					(2)
Common stock	(131)					(131)
Redemption of preferred stock	(111)		(107)			(4)
Issuance of common stock	(5)				(15)				10
Repurchase of common stock	(3)								(3)
Restricted stock compensation	16				16
Balance at end of period at Sep. 30, 2024	6,249		0	4	4,693	1,886		(154)	(180)
Balance at beginning of period at Jun. 30, 2024	6,090			4	4,690	1,820		(243)	(181)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	199					110		89
Dividends declared:
Common stock	(44)					(44)
Issuance of common stock	0				(1)				1
Restricted stock compensation	4				4
Balance at end of period at Sep. 30, 2024	6,249		0	4	4,693	1,886		(154)	(180)
Balance at beginning of period at Dec. 31, 2024	6,302		0	4	4,695	1,952		(169)	(180)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	489					397		92
Dividends declared:
Common stock	(131)					(131)
Issuance of common stock	(7)				(17)				10
Repurchase of common stock	(32)								(32)
Restricted stock compensation	15				15
Balance at end of period at Sep. 30, 2025	6,636		0	4	4,693	2,218		(77)	(202)
Balance at beginning of period at Jun. 30, 2025	6,524			4	4,691	2,112		(92)	(191)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	165					150		15
Dividends declared:
Common stock	(44)					(44)
Issuance of common stock	1				0				1
Repurchase of common stock	(12)								(12)
Restricted stock compensation	2				2
Balance at end of period at Sep. 30, 2025	$ 6,636		$ 0	$ 4	$ 4,693	$ 2,218		$ (77)	$ (202)