Accumulated Other Comprehensive Loss - Schedule of Reclassifications out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Interest expense	$ 63.8	$ 39.6	$ 151.4	$ 119.3
Provision for income taxes	73.8	60.3	174.3	168.9
Net Income Attributable to Ingersoll Rand Inc.	$ 221.6	$ 208.3	608.8	548.9
Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Net Income Attributable to Ingersoll Rand Inc.			(19.6)	(20.7)
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Interest expense			(12.4)	(10.8)
Provision for income taxes			3.1	2.7
Net Income Attributable to Ingersoll Rand Inc.			(9.3)	(8.1)
Net investment hedges | Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Interest expense			(12.4)	(14.7)
Provision for income taxes			3.1	3.7
Net Income Attributable to Ingersoll Rand Inc.			(9.3)	(11.0)
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			(1.4)	(2.1)
Provision for income taxes			0.4	0.5
Net Income Attributable to Ingersoll Rand Inc.			$ (1.0)	$ (1.6)