CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	Total Ingersoll Rand Inc. Stockholders’ Equity	Common Stock	Capital in Excess of Par Value	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interests
Balance at beginning of period (shares) at Dec. 31, 2020			420,100,000
Balance at beginning 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	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 (in shares)			3,700,000
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 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			423,800,000
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	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 (in shares)			2,500,000
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 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	405,117,710		426,300,000
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	785.1	778.7			778.7			6.4
Dividends declared	(32.4)	(32.4)			(32.4)
Issuance of common stock for stock-based compensation plans (in shares)			2,300,000
Issuance of common stock for stock-based compensation plans	27.8	27.8		27.8
Purchases of treasury stock	(264.1)	(264.1)					(264.1)
Issuance of treasury stock for stock-based compensation plans	2.8	2.8		(4.9)			7.7
Stock-based compensation	51.1	51.1		51.1
Other comprehensive loss, net of tax	25.8	24.1				24.1		1.7
Dividends attributable to noncontrolling interests	$ (6.6)							(6.6)
Balance at end of period (shares) at Dec. 31, 2023	403,347,394		428,600,000
Balance at end of period at Dec. 31, 2023	$ 9,846.7	$ 9,783.8	$ 4.3	$ 9,550.8	$ 1,697.2	$ (227.6)	$ (1,240.9)	$ 62.9