ALLOWANCE FOR CREDIT LOSSES, Amortized Cost Basis (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2022		Mar. 31, 2022
Credit Risk Profile, Segregated by Class [Abstract]
2023/2022	$ 73,135	[1]	$ 69,671	[2]
2022/2021	30,406	[1]	39,075	[2]
2021/2020	24,177	[1]	5,295	[2]
2020/2019	4,383	[1]	1,507	[2]
2019/2018	925	[1]	127	[2]
2018/2017	61	[1]	15	[2]
Total	133,087	[1]	115,690	[2]
Transfers	(20,156)	[1],[3]	(38,769)	[2],[4]
Net credit exposure	112,931	[1]	76,921
Unguaranteed residual value	4,830		6,424
Notes Receivable [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2023/2022	45,239		44,186
2022/2021	17,091		30,981
2021/2020	19,714		2,055
2020/2019	1,299		558
2019/2018	575		5
2018/2017	4		4
Total	83,922		77,789
Transfers	(16,943)	[3]	(35,037)	[4]
Net credit exposure	66,979		42,752
Unguaranteed residual value	0	[5]	0	[6]
Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2023/2022	27,896		25,485
2022/2021	13,315		8,094
2021/2020	4,463		3,240
2020/2019	3,084		949
2019/2018	350		122
2018/2017	57		11
Total	49,165		37,901
Transfers	(3,213)	[3]	(3,732)	[4]
Net credit exposure	45,952		34,169
Unguaranteed residual value	$ 8,385	[5]	9,141	[6]
High CQR [Member] | Maximum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating	1.00%
High CQR [Member] | Notes Receivable [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2023/2022	$ 37,200		35,264
2022/2021	14,436		28,005
2021/2020	18,494		1,297
2020/2019	791		345
2019/2018	452		2
2018/2017	0		4
Total	71,373		64,917
Transfers	(16,450)	[3]	(30,274)	[4]
Net credit exposure	54,923		34,643
High CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2023/2022	11,271		14,549
2022/2021	5,513		5,002
2021/2020	2,879		2,499
2020/2019	2,754		902
2019/2018	317		50
2018/2017	32		11
Total	22,766		23,013
Transfers	(1,965)	[3]	(3,385)	[4]
Net credit exposure	$ 20,801		19,628
Average CQR [Member] | Minimum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating	2.00%
Average CQR [Member] | Maximum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating	10.00%
Average CQR [Member] | Notes Receivable [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2023/2022	$ 8,039		8,922
2022/2021	2,655		2,976
2021/2020	1,220		758
2020/2019	508		213
2019/2018	123		3
2018/2017	4		0
Total	12,549		12,872
Transfers	(493)	[3]	(4,763)	[4]
Net credit exposure	12,056		8,109
Average CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2023/2022	16,625		10,936
2022/2021	7,802		3,092
2021/2020	1,584		741
2020/2019	330		47
2019/2018	33		72
2018/2017	25		0
Total	26,399		14,888
Transfers	(1,248)	[3]	(347)	[4]
Net credit exposure	$ 25,151		14,541
Low CQR [Member] | Minimum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating	10.00%
Low CQR [Member] | Maximum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating	100.00%
Low CQR [Member] | Notes Receivable [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2023/2022	$ 0		0
2022/2021	0		0
2021/2020	0		0
2020/2019	0		0
2019/2018	0		0
2018/2017	0		0
Total	0		0
Transfers	0	[3]	0	[4]
Net credit exposure	0		0
Low CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2023/2022	0		0
2022/2021	0		0
2021/2020	0		0
2020/2019	0		0
2019/2018	0		0
2018/2017	0		0
Total	0		0
Transfers	0	[3]	0	[4]
Net credit exposure	$ 0		$ 0

[1] Unguaranteed residual values of $4,830 thousand that we retained after selling the related lease receivable is excluded from amortized cost.

[2] Unguaranteed residual values of $6,424 thousand that we retained after selling the related lease receivable is excluded from amortized cost.

[3] Transfers consist of receivables that have been transferred to third-party financial institutions on a non-recourse basis.

[4] Transfers consist of receivables that have been transferred to third-party financial institutions on a non-recourse basis and receivables that are in the process of being transferred to third-party financial institutions.

[5] Includes unguaranteed residual values of $4,830 thousand that we retained after selling the related lease receivable.

[6] Includes unguaranteed residual values of $6,424 thousand that we retained after selling the related lease receivable.