Business Combinations - Inventories (Details) - Ingersoll Rand Industrial $ in Millions	Feb. 29, 2020 USD ($)
Inventories [Abstract]
Preliminary fair value step-up of inventory	$ 116.2
Step-up of inventory measured on FIFO	70.3
Step-up of inventory measured on LIFO	$ 45.9

The step up adjustment of inventory to fair value recognized as of the acquisition date.

No definition available.

Name:	iri_BusinessCombinationStepUpAdjustmentOfInventoryToFairValue
Namespace Prefix:	iri_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant