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Document and Entity Information
May 17, 2021
Cover [Abstract]  
Entity Registrant Name IDEX CORP /DE/
Amendment Flag false
Entity Central Index Key 0000832101
Document Type 8-K
Document Period End Date May 17, 2021
Entity Incorporation State Country Code DE
Entity File Number 1-10235
Entity Tax Identification Number 36-3555336
Entity Address, Address Line One 3100 Sanders Road
Entity Address, Address Line Two Suite 301
Entity Address, City or Town Northbrook
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60062
City Area Code (847)
Local Phone Number 498-7070
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, par value $.01 per share
Trading Symbol IEX
Security Exchange Name NYSE
Entity Emerging Growth Company false