Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2021	Feb. 18, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-38095
Entity Registrant Name	Ingersoll Rand Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-2393770
Entity Address, Address Line One	800-A Beaty Street
Entity Address, City or Town	Davidson
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	28036
City Area Code	704
Local Phone Number	655-4000
Title of 12(b) Security	Common Stock, $0.01 Par Value per share
Trading Symbol	IR
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 18.9
Entity Common Stock, Shares Outstanding		407,967,909
Documents Incorporated by Reference	Portions of the Proxy Statement for the registrant’s 2022 Annual Meeting of Stockholders are incorporated by reference in Part III of this report.
Entity Central Index Key	0001699150
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY