Accumulated Other Comprehensive Loss - Schedule of Reclassifications out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Interest expense	$ 50.8	$ 40.8	$ 87.6	$ 79.7
Provision for income taxes	46.1	60.5	100.5	108.6
Net Income Attributable to Ingersoll Rand Inc.	$ 185.0	$ 179.5	387.2	340.6
Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Net Income Attributable to Ingersoll Rand Inc.			(13.7)	(13.3)
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Interest expense			(8.8)	(6.0)
Provision for income taxes			2.2	1.5
Net Income Attributable to Ingersoll Rand Inc.			(6.6)	(4.5)
Net investment hedges | Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Interest expense			(8.5)	(10.2)
Provision for income taxes			2.1	2.6
Net Income Attributable to Ingersoll Rand Inc.			(6.4)	(7.6)
Pension and Other Postretirement Benefit Plans | Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Amortization of defined benefit pension and other postretirement benefit items			(0.9)	(1.6)
Provision for income taxes			0.2	0.4
Net Income Attributable to Ingersoll Rand Inc.			$ (0.7)	$ (1.2)