CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Total Ingersoll Rand Inc. Stockholders’ Equity	Total Ingersoll Rand Inc. Stockholders’ Equity Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Capital in Excess of Par Value	Retained Earnings (Accumulated Deficit)	Retained Earnings (Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Treasury Stock	Noncontrolling Interests	Noncontrolling Interests Cumulative Effect, Period of Adoption, Adjustment
Balance at beginning of period (shares) at Dec. 31, 2019					206.8
Balance at beginning of period at Dec. 31, 2019	$ 1,869.9	$ (1.0)	$ 1,869.9	$ (1.0)	$ 2.1	$ 2,302.0	$ (141.4)	$ (1.0)	$ (256.0)	$ (36.8)	$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(32.4)		(33.3)				(33.3)				0.9
Issuance of common stock for stock-based compensation plans (shares)					2.3
Issuance of common stock for stock-based compensation plans	20.1		20.1			20.1
Purchases of treasury stock	(2.1)		(2.1)							(2.1)
Issuance of treasury stock for stock-based compensation plans	2.4		2.4			(3.2)				5.6
Acquisition of Ingersoll Rand Industrial (Note 4) (shares)					211.0
Acquisition of Ingersoll Rand Industrial (Note 4)	7,010.3		6,937.0		$ 2.1	6,934.9					73.3
Costs of issuing equity securities (Note 4)	(1.0)					(1.0)
Stock-based compensation	57.5		57.5			57.5
Other comprehensive income (loss), net of tax	268.8		270.2						270.2		(1.4)
Adjustments for shares tendered in open offer (Note 13)	(14.9)										(14.9)
Adjustments for shares sold in offer for sale (Note 13)		$ 11.9										$ 11.9
Balance at end of period (shares) at Dec. 31, 2020					420.1
Balance at end of period at Dec. 31, 2020	9,189.5		9,119.7		$ 4.2	9,310.3	(175.7)		14.2	(33.3)	69.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	565.0		562.5				562.5				2.5
Dividends declared	(8.2)		(8.2)				(8.2)
Issuance of common stock for stock-based compensation plans (shares)					3.7
Issuance of common stock for stock-based compensation plans	20.4		20.4		$ 0.1	20.3
Purchases of treasury stock	(736.8)		(736.8)							(736.8)
Issuance of treasury stock for stock-based compensation plans	1.8		1.8			(19.9)				21.7
Stock-based compensation	97.9		97.9			97.9
Other comprehensive income (loss), net of tax	(56.6)		(54.3)						(54.3)		(2.3)
Divestiture of foreign subsidiaries	(1.5)		(1.5)						(1.5)
Dividends attributable to noncontrolling interests	(0.3)										(0.3)
Balance at end of period (shares) at Dec. 31, 2021					423.8
Balance at end of period at Dec. 31, 2021	9,071.2		9,001.5		$ 4.3	9,408.6	378.6		(41.6)	(748.4)	69.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	608.5		604.7				604.7				3.8
Dividends declared	(32.4)		(32.4)				(32.4)
Issuance of common stock for stock-based compensation plans (shares)					2.5
Issuance of common stock for stock-based compensation plans	17.3		17.3			17.3
Purchases of treasury stock	(261.1)		(261.1)							(261.1)
Issuance of treasury stock for stock-based compensation plans	2.2		2.2			(22.8)				25.0
Stock-based compensation	73.7		73.7			73.7
Other comprehensive income (loss), net of tax	(217.3)		(210.1)						(210.1)		(7.2)
Dividends attributable to noncontrolling interests	(4.9)										(4.9)
Balance at end of period (shares) at Dec. 31, 2022					426.3
Balance at end of period at Dec. 31, 2022	$ 9,257.2		$ 9,195.8		$ 4.3	$ 9,476.8	$ 950.9		$ (251.7)	$ (984.5)	$ 61.4