Fair Value Measurements - Schedule of Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Long-Term Debt
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 160	$ 509	$ 160	$ 514
Settlements	(69)	(2)	(69)	(7)
Losses recognized in earnings	0	0	0	0
Balance at end of period	91	507	91	507
Securitized Beneficial Interests
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	25,640	19,641	15,036	19,522
Issuances of sales of receivables/guarantees	57,410	47,637	118,439	84,277
Settlements	(69,296)	(40,198)	(114,529)	(73,381)
Losses recognized in earnings	(2,661)	(2,687)	(7,853)	(6,025)
Balance at end of period	11,093	24,393	11,093	24,393
Guarantees
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	2,611	5,764	5,097	5,262
Issuances of sales of receivables/guarantees	392	1,200	1,330	2,254
Settlements	(1,680)	(4,206)	(2,395)	(4,761)
Losses recognized in earnings	(1,039)	(1,300)	(3,748)	(1,297)
Balance at end of period	$ 284	$ 1,458	$ 284	$ 1,458