Document And Entity Information - USD ($)	11 Months Ended
	Dec. 31, 2021	Mar. 30, 2022	Jun. 30, 2021
Document Information Line Items
Entity Registrant Name	ION ACQUISITION CORP 3 LTD.
Trading Symbol	IACC
Document Type	10-K
Current Fiscal Year End Date	--12-31
Entity Public Float			$ 248,193,000
Amendment Flag	false
Entity Central Index Key	0001844579
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Dec. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Document Annual Report	true
Document Transition Report	false
Entity File Number	001-40372
Entity Incorporation, State or Country Code	E9
Entity Tax Identification Number	00-0000000
Entity Address, Address Line One	89 Medinat Hayehudim Street
Entity Address, City or Town	Herzliya
Entity Address, Postal Zip Code	4676672
City Area Code	972 (9)
Local Phone Number	970-3620
Title of 12(b) Security	Class A ordinary shares, par value $0.0001 per share
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes
Auditor Firm ID	1281
Auditor Name	KOST FORER GABBAY & KASIERER
Auditor Location	Tel Aviv-Jaffa, Israel
Entity Address, Country	IL
Class A Ordinary Shares
Document Information Line Items
Entity Common Stock, Shares Outstanding		26,056,000
Class B Ordinary Shares
Document Information Line Items
Entity Common Stock, Shares Outstanding		6,325,000