Accumulated Other Comprehensive Loss - Schedule of Reclassifications out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Income Statement [Abstract]
Interest expense	$ 61.2	$ 36.8
Provision for income taxes	58.5	54.4
Net Income Attributable to Ingersoll Rand Inc.	186.5	202.2
Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Net Income Attributable to Ingersoll Rand Inc.	(8.2)	(7.0)
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Interest expense	(3.0)	(4.7)
Provision for income taxes	0.8	1.2
Net Income Attributable to Ingersoll Rand Inc.	(2.2)	(3.5)
Net investment hedges | Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Interest expense	(5.0)	(4.2)
Provision for income taxes	1.3	1.1
Net Income Attributable to Ingersoll Rand Inc.	(3.7)	(3.1)
Pension and Other Postretirement Benefit Plans | Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Provision for income taxes	0.8	0.1
Cost of sales and Selling and administrative expenses	(3.1)	(0.5)
Net Income Attributable to Ingersoll Rand Inc.	$ (2.3)	$ (0.4)