Accumulated Other Comprehensive Loss - Schedule of Reclassifications out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Interest expense	$ 62.7	$ 50.8	$ 123.9	$ 87.6
Provision for income taxes	21.0	46.1	79.5	100.5
Net Income (Loss) Attributable to Ingersoll Rand Inc.	$ (115.3)	$ 185.0	71.2	387.2
Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Net Income (Loss) Attributable to Ingersoll Rand Inc.			(15.8)	(13.7)
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Interest expense			(6.0)	(8.8)
Provision for income taxes			1.5	2.2
Net Income (Loss) Attributable to Ingersoll Rand Inc.			(4.5)	(6.6)
Net investment hedges | Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Interest expense			(8.9)	(8.5)
Provision for income taxes			2.2	2.1
Net Income (Loss) Attributable to Ingersoll Rand Inc.			(6.7)	(6.4)
Pension and Other Postretirement Benefit Plans | Reclassification out of Accumulated Other Comprehensive Loss
Income Statement [Abstract]
Provision for income taxes			1.6	0.2
Cost of sales and Selling and administrative expenses			(6.2)	(0.9)
Net Income (Loss) Attributable to Ingersoll Rand Inc.			$ (4.6)	$ (0.7)