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Cover Cover - USD ($)
 12 Months Ended
Dec. 31, 2019
Feb. 01, 2020
Jun. 30, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 001-34400    
Entity Registrant Name INGERSOLL-RAND PLC    
Entity Incorporation, State or Country Code L2    
Entity Tax Identification Number 98-0626632    
Entity Address, Address Line One 170/175 Lakeview Dr.    
Entity Address, Address Line Two Airside Business Park    
Entity Address, City or Town Swords Co. Dublin    
Entity Address, Country IE    
Entity Address, Postal Zip Code 00000    
Country Region 353    
City Area Code 0    
Local Phone Number 18707400    
Title of 12(b) Security Ordinary Shares, Par Value $1.00 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    
Entity Shell Company false    
Entity Public Float     $ 30,500,000,000
Entity Common Stock, Shares Outstanding   238,401,033  
Documents Incorporated by Reference
Portions of the registrant’s proxy statement to be filed within 120 days of the close of the registrant’s fiscal year in connection with the registrant’s Annual General Meeting of Shareholders to be held June 4, 2020 are incorporated by reference into Part II and Part III of this Form 10-K.
    
Entity Central Index Key 0001466258    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Amendment Flag false