Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2022	Nov. 15, 2022
Document Information Line Items
Entity Registrant Name	INTERPRIVATE II ACQUISITION CORP.
Trading Symbol	IPVA
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Entity Central Index Key	0001839608
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Sep. 30, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	true
Entity Ex Transition Period	false
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-40152
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	85-3122877
Entity Address, Address Line One	1350 Avenue of the Americas
Entity Address, Address Line Two	2nd Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10019
City Area Code	(212)
Local Phone Number	920-0125
Title of 12(b) Security	Class A common stock, par value $0.0001 per share
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes
Class A Common Stock
Document Information Line Items
Entity Common Stock, Shares Outstanding		26,075,000
Class B Common Stock
Document Information Line Items
Entity Common Stock, Shares Outstanding		6,468,750