Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Cash flow from operating activities:
Net Income (Loss)	$ 629,570	$ 887,063
Adjustments to reconcile net earnings to cash provided by operations:
Depreciation	604,237	544,176
Amortization of premiums and accretion of discounts related to investments, net	12,905	15,232
Amortization of debt issuance costs	5,295	5,694
Interest credited to policyholders	52,099	39,048
Change in allowance for losses on trade receivables	1,155	4,617
Proceeds from Fees Received	11,338	16,417
Net gain on sale of real and personal property	(138,653)	(199,196)
Net losses on disposal of real estate	5,320	5,038
Gain (Loss) on Investments	(662)	8,695
Net (gains) losses on equity securities	(174)	10,906
Deferred income taxes	101,999	121,707
Net change in other operating assets and liabilities:
Reinsurance recoverables and trade receivables	(7,217)	(25,853)
Inventories and parts	(3,698)	(8,673)
Prepaid expenses	(1,509)	(7,867)
Capitalization of deferred policy acquisition costs	(7,629)	(1,217)
Other assets	(20,627)	(13,734)
Related party assets	(1,073)	(26,775)
Increase (Decrease) in Accounts Payable and Accrued Liabilities	14,216	62,430
Increase (Decrease) in Insurance Liabilities	29,719	1,688
Other policyholders' funds and liabilities	866	1,767
Deferred income	7,046	2,168
Related party liabilities	774	1,301
Net cash provided by operating activities	1,240,043	1,515,680
Cash flow from investing activities:
Escrow deposits	(1,045)	(159)
Purchase of:
Property, plant and equipment	(2,400,949)	(2,076,424)
Fixed maturity investments	(270,383)	(491,431)
Equity securities	(519)	(4,828)
Investments, other	(132,963)	(205,672)
Proceeds from sales and paydowns of:
Property, plant and equipment	598,170	533,595
Fixed maturity investments	447,489	148,290
Equity securities	1,417	1,187
Investments, other	46,800	223,354
Net cash used by investing activities	(1,709,893)	(1,871,770)
Cash flow from financing activities:
Borrowings from credit facilities	1,037,082	975,966
Principal repayments on credit facilities	(625,067)	(695,321)
Payment of debt issuance costs	(4,072)	(4,962)
Finance lease payments	(86,166)	(95,290)
Securitization deposits	236	137
Common stock dividend paid		19,608
Series N Non-Voting Common Stock dividends paid	(22,941)	(7,059)
Investment contract deposits	214,312	258,157
Investment contract withdrawals	(302,150)	(236,742)
Net cash provided by financing activities	211,234	175,278
Effects of exchange rate on cash	4,068	12,706
Increase (decrease) in cash and cash equivalents	(254,548)	193,518
Cash and cash equivalents at the beginning of period	2,060,524	2,704,137
Cash and cash equivalents at the end of period	$ 1,805,976	$ 2,510,619