CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Total Ingersoll Rand Inc. Stockholders’ Equity	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Noncontrolling Interests
Balance at beginning of period (in shares) at Dec. 31, 2022			426.3
Balance at beginning 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	553.6	548.9			548.9			4.7
Dividends declared	(24.3)	(24.3)			(24.3)
Issuance of common stock for stock-based compensation plans (in shares)			1.9
Issuance of common stock for stock-based compensation plans	19.8	19.8		19.8
Purchases of treasury stock	(133.3)	(133.3)					(133.3)
Issuance of treasury stock for stock-based compensation plans	2.4	2.4		(4.1)			6.5
Stock-based compensation	34.6	34.6		34.6
Other comprehensive income (loss), net of tax	(88.3)	(89.9)				(89.9)		1.6
Dividends attributable to noncontrolling interests	(1.9)							(1.9)
Balance at end of period (in shares) at Sep. 30, 2023			428.2
Balance at end of period at Sep. 30, 2023	9,619.8	9,554.0	$ 4.3	9,527.1	1,475.5	(341.6)	(1,111.3)	65.8
Balance at beginning of period (in shares) at Jun. 30, 2023			427.8
Balance at beginning of period at Jun. 30, 2023	9,480.4	9,414.8	$ 4.3	9,510.3	1,275.3	(263.2)	(1,111.9)	65.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	209.6	208.3			208.3			1.3
Dividends declared	(8.1)	(8.1)			(8.1)
Issuance of common stock for stock-based compensation plans (in shares)			0.4
Issuance of common stock for stock-based compensation plans	6.1	6.1		6.1
Purchases of treasury stock	(0.1)	(0.1)					(0.1)
Issuance of treasury stock for stock-based compensation plans	0.2	0.2		(0.5)			0.7
Stock-based compensation	11.2	11.2		11.2
Other comprehensive income (loss), net of tax	(77.6)	(78.4)				(78.4)		0.8
Dividends attributable to noncontrolling interests	(1.9)							(1.9)
Balance at end of period (in shares) at Sep. 30, 2023			428.2
Balance at end of period at Sep. 30, 2023	9,619.8	9,554.0	$ 4.3	9,527.1	1,475.5	(341.6)	(1,111.3)	65.8
Balance at beginning of period (in shares) at Dec. 31, 2023			428.6
Balance at beginning 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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	614.4	608.8			608.8			5.6
Dividends declared	(24.2)	(24.2)			(24.2)
Issuance of common stock for stock-based compensation plans (in shares)			2.0
Issuance of common stock for stock-based compensation plans	26.4	26.4		26.4
Purchases of treasury stock	(198.2)	(198.2)					(198.2)
Issuance of treasury stock for stock-based compensation plans	1.9	1.9		(5.9)			7.8
Stock-based compensation	43.6	43.6		43.6
Other comprehensive income (loss), net of tax	25.5	25.5				25.5
Dividends attributable to noncontrolling interests	(1.9)							(1.9)
Balance at end of period (in shares) at Sep. 30, 2024			430.6
Balance at end of period at Sep. 30, 2024	10,334.2	10,267.6	$ 4.3	9,614.9	2,281.8	(202.1)	(1,431.3)	66.6
Balance at beginning of period (in shares) at Jun. 30, 2024			430.4
Balance at beginning of period at Jun. 30, 2024	10,024.2	9,958.2	$ 4.3	9,595.3	2,068.3	(340.1)	(1,369.6)	66.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	223.4	221.6			221.6			1.8
Dividends declared	(8.1)	(8.1)			(8.1)
Issuance of common stock for stock-based compensation plans (in shares)			0.2
Issuance of common stock for stock-based compensation plans	5.1	5.1		5.1
Purchases of treasury stock	(62.7)	(62.7)					(62.7)
Issuance of treasury stock for stock-based compensation plans	0.5	0.5		(0.5)			1.0
Stock-based compensation	15.0	15.0		15.0
Other comprehensive income (loss), net of tax	138.7	138.0				138.0		0.7
Dividends attributable to noncontrolling interests	(1.9)							(1.9)
Balance at end of period (in shares) at Sep. 30, 2024			430.6
Balance at end of period at Sep. 30, 2024	$ 10,334.2	$ 10,267.6	$ 4.3	$ 9,614.9	$ 2,281.8	$ (202.1)	$ (1,431.3)	$ 66.6