Inventory (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Inventory (Details) [Line Item]
Reserves for excess and slow-moving inventory	$ 1.5	$ 0.9

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