Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Cash flow from operating activities:
Net Income (Loss)	$ 210,913	$ 449,381
Adjustments to reconcile net earnings to cash provided by operations:
Depreciation	883,104	718,755
Amortization of premiums and accretion of discounts related to investments, net	13,527	10,431
Amortization of debt issuance costs	5,213	4,275
Interest credited to policyholders	72,952	58,290
Change in allowance for losses on trade receivables	(1,369)	1,463
Operating lease right-of-use asset amortization	6,813	8,015
Net gain on sale of real and personal property	86,732	(28,849)
Net losses on disposal of real estate	5,610	9,453
Net (gains) losses on sales of fixed maturity securities	2,356	19
Net gains on equity securities	(5,175)	(7,299)
Deferred income taxes	99,677	48,769
Net change in other operating assets and liabilities:
Reinsurance recoverables and trade receivables	59,566	34,720
Inventories and parts	(11,888)	(4,209)
Prepaid expenses	(70,301)	(20,559)
Capitalization of deferred policy acquisition costs	5,551	(1,791)
Other assets	(2,704)	(19,270)
Related party assets	(12,987)	(2,404)
Increase (Decrease) in Accounts Payable and Accrued Liabilities	(16,859)	20,461
Policy benefits and losses, claims and loss expenses payable	63,053	(22,069)
Other policyholders' funds and liabilities	(1,754)	2,825
Deferred income	1,195	3,602
Related party liabilities	(2,630)	(909)
Net cash provided by operating activities	1,390,595	1,255,896
Cash flow from investing activities:
Increase Decrease Escrow Deposits	729	3,445
Purchase of:
Property, plant and equipment	(2,602,669)	(2,863,496)
Fixed maturity investments	(266,213)	(441,974)
Equity securities	(3,531)	(852)
Investments, other	(144,986)	(92,774)
Proceeds from sales and paydowns of:
Property, plant and equipment	571,544	530,135
Fixed maturity investments	310,459	318,634
Equity securities	14,745	10,842
Investments, other	107,318	97,594
Net cash used by investing activities	(2,012,604)	(2,438,446)
Cash flow from financing activities:
Borrowings from credit facilities	1,760,351	1,404,974
Principal repayments on credit facilities	(902,232)	(713,949)
Payment of debt issuance costs	(10,602)	(4,224)
Finance lease payments	(32,901)	(60,661)
Securitization deposits	345	331
Series N Non-Voting Common Stock dividends paid	(26,471)	(26,471)
Investment contract deposits	247,328	389,848
Investment contract withdrawals	(378,377)	(318,005)
Net cash provided by financing activities	657,441	671,843
Effects of exchange rate on cash	7,997	(6,439)
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation, Total	43,429	(517,146)
Cash and cash equivalents at the beginning of period	988,828	1,534,544
Cash and cash equivalents at the end of period	$ 1,032,257	$ 1,017,398