CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Revenues	$ 1,335.2	$ 596.7	$ 3,399.5	$ 1,846.1
Cost of sales	853.2	375.2	2,313.0	1,159.7
Gross Profit	482.0	221.5	1,086.5	686.4
Selling and administrative expenses	245.6	95.3	648.7	323.0
Amortization of intangible assets	114.2	30.4	284.0	92.6
Impairment of intangible assets	19.9	0.0	19.9	0.0
Other operating expense, net	28.0	22.9	178.6	43.1
Operating Income (Loss)	74.3	72.9	(44.7)	227.7
Interest expense	28.8	23.2	86.7	68.0
Loss on extinguishment of debt	0.0	0.0	2.0	0.2
Other income, net	(2.6)	(0.6)	(5.1)	(3.1)
Income (Loss) Before Income Taxes	48.1	50.3	(128.3)	162.6
Provision for income taxes	18.2	9.0	55.2	29.2
Net Income (Loss)	29.9	41.3	(183.5)	133.4
Less: Net income attributable to noncontrolling interests	0.4	0.0	1.4	0.0
Net Income (Loss) Attributable to Ingersoll Rand Inc.	$ 29.5	$ 41.3	$ (184.9)	$ 133.4
Basic income (loss) per share (USD per share)	$ 0.07	$ 0.20	$ (0.50)	$ 0.66
Diluted income (loss) per share (USD per share)	$ 0.07	$ 0.20	$ (0.50)	$ 0.64