CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Comprehensive Income Attributable to Ingersoll Rand Inc.
Net income (loss) attributable to Ingersoll Rand Inc.	$ (33.3)	$ 159.1	$ 269.4
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments, net	268.2	(1.5)	(61.0)
Unrecognized gains on cash flow hedges, net	10.9	7.2	18.1
Pension and other postretirement prior service cost and gain or loss, net	(8.9)	(6.5)	(4.6)
Other comprehensive income (loss), net of tax	270.2	(0.8)	(47.5)
Comprehensive income attributable to Ingersoll Rand Inc.	236.9	158.3	221.9
Comprehensive Loss Attributable to Noncontrolling Interests
Net income attributable to noncontrolling interests	0.9	0.0	0.0
Foreign currency translation adjustments, net	(1.4)	0.0	0.0
Total other comprehensive loss, net of tax	(1.4)	0.0	0.0
Comprehensive loss attributable to noncontrolling interests	(0.5)	0.0	0.0
Total Comprehensive Income	$ 236.4	$ 158.3	$ 221.9