Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flow from operating activities:
Net earnings	$ 530,346	$ 688,211
Adjustments to reconcile net earnings to cash provided by operations:
Depreciation	394,400	359,804
Amortization of deferred policy acquisition costs	14,871	14,644
Amortization of premiums and accretion of discounts related to investments, inc	8,441	10,249
Amortization of debt issuance costs	3,427	3,356
Interest credited to policyholders	36,329	24,690
Change in allowance for losses on trade receivables	578	(5,494)
Change in allowance for inventory reserves	3,461	7,125
Net gain on sale of real and personal property	(102,464)	(128,690)
Net losses on disposal of real estate	2,736	4,179
Net (gain) loss on sale of investments	(917)	7,207
Net losses on equity investments	(2,745)	7,963
Deferred income tax	107,751	103,828
Net change in other operating assets and liabilities:
Reinsurance recoverables and trade receivables	(23,402)	32,342
Inventories	(13,520)	(14,416)
Prepaid expenses	(21,824)	3
Capitalization of deferred policy acquisition costs	(7,773)	(14,900)
Other assets	(8,751)	2,432
Related party assets	7,403	(1,640)
Accounts payable and accrued expenses	23,248	64,297
Policy benefits and losses, claims and loss expenses payable	(18,553)	11,460
Other policyholders' funds and liabilities	(554)	1,314
Deferred income	4,115	9,458
Related party liabilities	828	742
Net cash provided by operating activities	937,431	1,188,164
Cash flow from investing activities:
Escrow deposits	573	9,688
Purchase of:
Property, plant and equipment	(1,664,387)	(1,335,528)
Short term investments	(44,903)	(36,173)
Fixed maturity investments	(106,777)	(202,265)
Equity securities	(309)	(4,356)
Real estate	(537)	(4,931)
Mortgage loans	(97,702)	(75,635)
Proceeds from sale of:
Property, plant and equipment	408,279	329,611
Short term investments	15,959	33,373
Fixed maturity investments	389,216	106,527
Equity securities	300	717
Preferred stock	913	717
Mortgage loans	13,049	74,165
Net cash used by investing activities	(1,086,326)	(1,104,807)
Cash flow from financing activities:
Borrowings from credit facilities	704,960	792,654
Principal repayments on credit facilities	(351,893)	(441,019)
Payment of debt issuance costs	(4,018)	(3,942)
Capital lease payments	(59,752)	(65,831)
Securitization deposits	151	49
Common stock dividends paid	(14,118)	(19,608)
Investment contract deposits	132,630	169,017
Investment contract withdrawals	(174,256)	(139,917)
Net cash provided by (used in) financing activities	233,704	291,403
Effects on exchange rate on cash	(202)	(13,782)
Increase (decrease) in cash and cash equivalents	84,607	360,978
Cash and cash equivalents at the beginning of period	2,060,524	2,704,137
Cash and cash equivalents at the end of period	$ 2,145,131	$ 3,065,115