Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	May 13, 2020
Cover [Abstract]
Entity Registrant Name	Ingersoll Rand Inc.
Entity Central Index Key	0001699150
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		416,592,698
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-38095
Entity Tax Identification Number	46-2393770
Entity Incorporation, State or Country Code	DE
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