INVENTORIES (Details Narrative) - USD ($)	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Inventory Disclosure [Abstract]
Equipment transferred from inventories	$ 448,686

Transfer of selfproduced products from inventories to property and equipment

No definition available.

Name:	LSE_TransferOfSelfproducedProductsFromInventoriesToPropertyAndEquipment
Namespace Prefix:	LSE_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration