CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Balance at beginning of period at Dec. 31, 2020	$ 4,959	$ 107	$ 3	$ 4,087	$ 869	$ (39)	$ (68)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	293				306	(13)
Dividends declared:
Preferred stock	(6)				(6)
Common stock	(117)				(117)
Issuance of common stock	(4)			3	(1)		(6)
Repurchase of common stock	(43)						(43)
Restricted stock compensation	16			16
Balance at end of period at Sep. 30, 2021	5,098	107	3	4,106	1,051	(52)	(117)
Balance at beginning of period at Jun. 30, 2021	5,037	107	3	4,101	981	(46)	(109)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	105				111	(6)
Dividends declared:
Preferred stock	(2)				(2)
Common stock	(39)				(39)
Issuance of common stock	(1)						(1)
Repurchase of common stock	(7)						(7)
Restricted stock compensation	5			5
Balance at end of period at Sep. 30, 2021	5,098	107	3	4,106	1,051	(52)	(117)
Balance at beginning of period at Dec. 31, 2021	5,150	107	3	4,109	1,110	(62)	(117)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(16)				300	(316)
Dividends declared:
Preferred stock	(6)				(6)
Common stock	(129)				(129)
Issuance of common stock	(6)			1			(7)
Issuance of common stock - acquisitions	443		1	442
Repurchase of common stock	(43)						(43)
Restricted stock compensation	13			13
Balance at end of period at Sep. 30, 2022	5,406	107	4	4,565	1,275	(378)	(167)
Balance at beginning of period at Jun. 30, 2022	5,436	107	4	4,562	1,182	(252)	(167)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	12				138	(126)
Dividends declared:
Preferred stock	(2)				(2)
Common stock	(43)				(43)
Restricted stock compensation	3			3
Balance at end of period at Sep. 30, 2022	$ 5,406	$ 107	$ 4	$ 4,565	$ 1,275	$ (378)	$ (167)