Stock-Based Compensation Plans - Schedule of Share-Based Payment Arrangement, Expensed and Capitalized (Details) - USD ($) $ in Thousands	12 Months Ended
May 31, 2026	May 31, 2025	May 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capitalized	$ 5,012	$ 1,465	$ 207
Total stock-based compensation	225,135	22,495	17,315
Location, Statement of Income, Balance [Axis]: apld:DepreciationLessorAssetUnderOperatingLeaseAndOtherCostOfRevenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	519	0	0
Location, Statement of Income, Balance [Axis]: us-gaap:CostOfRevenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	3,202	2,936	1,955
Location, Statement of Income, Balance [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 216,402	$ 18,094	$ 15,153

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details