CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Revenues	$ 1,337.0	$ 1,129.5
Cost of sales	810.9	677.4
Gross Profit	526.1	452.1
Selling and administrative expenses	265.5	252.3
Amortization of intangible assets	86.2	84.2
Other operating expense (income), net	17.4	(5.7)
Operating Income	157.0	121.3
Interest expense	19.0	23.1
Other income, net	(4.6)	(2.5)
Income from Continuing Operations Before Income Taxes	142.6	100.7
Provision for income taxes	32.4	10.6
Loss on equity method investments	(4.3)	0.0
Income from Continuing Operations	105.9	90.1
Loss from discontinued operations, net of tax	(1.4)	(180.2)
Net Income (Loss)	104.5	(90.1)
Less: Net income attributable to noncontrolling interests	0.8	0.3
Net Income (Loss) Attributable to Ingersoll Rand Inc.	103.7	(90.4)
Amounts attributable to Ingersoll Rand Inc. common stockholders:
Income from continuing operations, net of tax	105.1	89.8
Loss from discontinued operations, net of tax	(1.4)	(180.2)
Net Income (Loss) Attributable to Ingersoll Rand Inc.	$ 103.7	$ (90.4)
Basic earnings (loss) per share of common stock:
Earnings from continuing operations (in usd per share)	$ 0.26	$ 0.21
Loss from discontinued operations (in usd per share)	0	(0.43)
Net earnings (loss) (in usd per share)	0.25	(0.22)
Diluted earnings (loss) per share of common stock:
Earnings from continuing operations (in usd per share)	0.25	0.21
Loss from discontinued operations (in usd per share)	0	(0.42)
Net earnings (loss) (in usd per share)	$ 0.25	$ (0.21)