XML 81 R73.htm IDEA: XBRL DOCUMENT v3.25.3

Leases (Finance Leases Weighted Average Remaining Lease Term and Discount Rate) (Details)	6 Months Ended	12 Months Ended
	Sep. 30, 2025	Mar. 31, 2025
Finance Leases Weighted Average Remaining Lease Term And Discount Rate [Abstract]
Remaining Lease Term Finance Lease Weighted Average	0.3	0.6
Finance Lease Weighted Average Discount Rate Percent	4.30%	4.40%

X

- Definition

Finance Leases Weighted Average Remaining Lease Term And Discount Rate Abstract

+ References

No definition available.

+ Details

Name:	uhal_FinanceLeasesWeightedAverageRemainingLeaseTermAndDiscountRateAbstract
Namespace Prefix:	uhal_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average remaining lease term for finance lease.

+ References

No definition available.

+ Details

Name:	uhal_RemainingLeaseTermFinanceLeaseWeightedAverage
Namespace Prefix:	uhal_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average discount rate for finance lease calculated at point in time.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 53
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479589/842-20-55-53

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (g)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-4

+ Details

Name:	us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant