The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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Name:	us-gaap_AmortizationOfIntangibleAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Organization and Significant Accounting Policies - Intangible Assets (Details) - USD ($)	3 Months Ended	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2024
Intangibles, net
Amortization expense		$ 203,984,000	$ 23,391,000	$ 17,954,000
UGV
Intangibles, net
Amortization expense	$ 4,258,000
Licenses
Intangibles, net
Weighted average amortization period		3 years
In-process research and development
Intangibles, net
Weighted average amortization period		3 years
Trademarks and tradenames
Intangibles, net
Weighted average amortization period		5 years
Minimum \| Technology
Intangibles, net
Weighted average amortization period		3 years
Minimum \| Backlog
Intangibles, net
Weighted average amortization period		1 year
Minimum \| Customer relationships
Intangibles, net
Weighted average amortization period		3 years
Maximum \| Technology
Intangibles, net
Weighted average amortization period		12 years
Maximum \| Backlog
Intangibles, net
Weighted average amortization period		3 years
Maximum \| Customer relationships
Intangibles, net
Weighted average amortization period		9 years