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, 2021	$ 5,150	$ 107	$ 3	$ 4,109	$ 1,110	$ (62)	$ (117)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(28)				162	(190)
Dividends declared:
Preferred stock	(4)				(4)
Common stock	(86)				(86)
Issuance of common stock	(6)			1			(7)
Issuance of common stock - acquisitions	443		1	442
Repurchase of common stock	(43)						(43)
Restricted stock compensation	10			10
Balance at end of period at Jun. 30, 2022	5,436	107	4	4,562	1,182	(252)	(167)
Balance at beginning of period at Mar. 31, 2022	5,439	107	4	4,560	1,118	(202)	(148)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	59				109	(50)
Dividends declared:
Preferred stock	(2)				(2)
Common stock	(43)				(43)
Issuance of common stock	(6)						(6)
Repurchase of common stock	(13)						(13)
Restricted stock compensation	2			2
Balance at end of period at Jun. 30, 2022	5,436	107	4	4,562	1,182	(252)	(167)
Balance at beginning of period at Dec. 31, 2022	5,653	107	4	4,696	1,370	(357)	(167)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	291				289	2
Dividends declared:
Preferred stock	(4)				(4)
Common stock	(87)				(87)
Issuance of common stock	(10)			(22)	(4)		16
Repurchase of common stock	(37)						(37)
Restricted stock compensation	12			12
Balance at end of period at Jun. 30, 2023	5,818	107	4	4,686	1,564	(355)	(188)
Balance at beginning of period at Mar. 31, 2023	5,788	107	4	4,693	1,471	(315)	(172)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	102				142	(40)
Dividends declared:
Preferred stock	(2)				(2)
Common stock	(43)				(43)
Issuance of common stock	(4)			(9)	(4)		9
Repurchase of common stock	(25)						(25)
Restricted stock compensation	2			2
Balance at end of period at Jun. 30, 2023	$ 5,818	$ 107	$ 4	$ 4,686	$ 1,564	$ (355)	$ (188)