Accumulated Other Comprehensive Income (Loss) - Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 156.7	$ 103.2	$ 87.7
Benefit for income taxes	(240.0)	(149.6)	21.8
Net Income Attributable to Ingersoll Rand Inc.	778.7	604.7	562.5
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.	(28.1)	(6.6)	3.5
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	(15.6)	2.8	0.0
Benefit for income taxes	3.9	(0.7)	0.0
Net Income Attributable to Ingersoll Rand Inc.	(11.7)	2.1	0.0
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	(19.0)	(11.5)	0.0
Benefit for income taxes	4.8	2.9	0.0
Net Income Attributable to Ingersoll Rand Inc.	(14.2)	(8.6)	0.0
Pension and Other Postretirement Benefit Plans | Reclassification out of Accumulated Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales and Selling and administrative expenses	(2.9)	(0.1)	4.7
Benefit for income taxes	0.7	0.0	(1.2)
Net Income Attributable to Ingersoll Rand Inc.	$ (2.2)	$ (0.1)	$ 3.5