SCHEDULE IV - REINSURANCE (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract]
Gross Amount	$ 81,531,659	$ 87,800,041	$ 98,911,475
Ceded to Other Companies	(69,253,317)	(50,258,155)	(53,299,613)
Assumed from Other Companies	45,073,052	20,664,894	16,762,152
Net Amount	$ 57,351,394	$ 58,206,780	$ 62,374,014
Percentage of Amount Assumed to Net	79.00%	36.00%	27.00%
Gross Amount	$ 118,535	$ 111,602	$ 107,733
Ceded to Other Companies	(2,281,618)	(1,342,375)	(2,455,580)
Assumed from Other Companies	4,138,758	2,413,234	4,573,925
Net Amount	$ 1,975,675	$ 1,182,461	$ 2,226,078
Percentage of Amount Assumed to Net	209.00%	204.00%	205.00%
Gross Amount	$ 912,931	$ 950,702	$ 850,062
Ceded to Other Companies	(94,767)	(17,509)	(1,127)
Assumed from Other Companies	442,085	328,528	288,870
Net Amount	$ 1,260,249	$ 1,261,721	$ 1,137,805
Percentage of Amount Assumed to Net	35.00%	26.00%	25.00%