Accumulated Other Comprehensive Income (Loss) - Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 213.2	$ 156.7	$ 103.2
Provision for income taxes	(262.5)	(240.0)	(149.6)
Net Income Attributable to Ingersoll Rand Inc.	838.6	778.7	604.7
Reclassification out of Accumulated Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Income Attributable to Ingersoll Rand Inc.	(26.1)	(28.1)	(6.6)
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	(15.7)	(15.6)	2.8
Provision for income taxes	3.9	3.9	(0.7)
Net Income Attributable to Ingersoll Rand Inc.	(11.8)	(11.7)	2.1
Accumulated Gain (Loss), Net Investment Hedge, Including Noncontrolling Interest | Reclassification out of Accumulated Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	(17.7)	(19.0)	(11.5)
Provision for income taxes	4.4	4.8	2.9
Net Income Attributable to Ingersoll Rand Inc.	(13.3)	(14.2)	(8.6)
Pension and Other Postretirement Benefit Plans | Reclassification out of Accumulated Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income taxes	0.4	0.7	0.0
Cost of sales and Selling and administrative expenses	(1.4)	(2.9)	(0.1)
Net Income Attributable to Ingersoll Rand Inc.	$ (1.0)	$ (2.2)	$ (0.1)