Cover	Dec. 09, 2021
Cover [Abstract]
Document Type	8-K
Amendment Flag	false
Document Period End Date	Dec. 09, 2021
Entity File Number	001-40372
Entity Registrant Name	ION ACQUISITION CORP 3 LTD.
Entity Central Index Key	0001844579
Entity Tax Identification Number	00-0000000
Entity Incorporation, State or Country Code	E9
Entity Address, Address Line One	89 Medinat Hayehudim Street
Entity Address, City or Town	Herzliya
Entity Address, Country	IL
Entity Address, Postal Zip Code	4676672
City Area Code	+972 (9)
Local Phone Number	970-3620
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Title of 12(b) Security	Class A ordinary share, par value $0.0001 per share
Trading Symbol	IACC
Security Exchange Name	NYSE
Entity Emerging Growth Company	true
Elected Not To Use the Extended Transition Period	false
Entity Information, Former Legal or Registered Name	Not Applicable