Condensed Financial Information Of Parent Company Condensed Financial Information Of Parent Company (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	$ 423,613	$ 606,959	$ (1,237,574)
Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]
Increase in other assets	(83,666)	(97,181)	(105,749)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Restricted stock surrendered	(9,531)	(8,505)	(75,369)
Net proceeds from preferred stock offering	498,516	0	0
Preferred stock dividends paid	(19,339)	0	0
Common stock dividends paid	(120,256)	(119,443)	(159,748)
Parent Only
Condensed Financial Statements, Captions [Line Items]
Net earnings (loss)	423,613	606,959	(1,237,574)
Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]
Increase in other assets	(323,852)	(67,242)	(29,568)
Increase (Decrease) in Operating Liabilities	(5,658)	5,714	780
Earned stock compensation	34,769	32,223	24,363
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions	(304,004)	(400,632)	1,491,004
Net cash provided by operating activities	(175,132)	177,022	249,005
Net Cash Provided by (Used in) Investing Activities [Abstract]
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	0	0	0
Net Cash Provided by (Used in) Financing Activities [Abstract]
Restricted stock surrendered		(8,505)	(75,369)
Net cash provided by (used in) financing activities	349,390	(127,948)	(235,117)
Net Cash Provided by (Used in) Continuing Operations	174,258	49,074	13,888
Cash and Cash Equivalents, at Carrying Value	$ 351,181	176,923	127,849	$ 113,961
Common stock dividends paid		$ (119,443)	$ (159,748)