Inventory (Details Textual)) - USD ($) $ in Millions	Jun. 30, 2019	Sep. 30, 2018
Inventory Disclosure [Abstract]
Reserves for excess and slow-moving inventory	$ 0.2	$ 0.5

It included in component parts are reserves for excess and slow-moving inventory.

No definition available.

Name:	inse_InventoryPartsAndComponentsReservesForExcessAndSlowmovingInventory
Namespace Prefix:	inse_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant