Cover - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Apr. 01, 2022	Jun. 30, 2021
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-40481
Entity Registrant Name	INDIE SEMICONDUCTOR, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	08-7654321
Entity Address, Address Line One	32 Journey
Entity Address, City or Town	Aliso Viejo
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92656
City Area Code	949
Local Phone Number	608-0854
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Public Float			$ 608.6
Documents Incorporated by Reference	Portions of the definitive Proxy Statement (the “2022 Proxy Statement”) for the registrant’s 2022 Annual Meeting of Stockholders are incorporated by reference into Part III, Items 10, 11, 12, 13 and 14 of this Form 10-K. This Proxy Statement will be filed within 120 days after the end of the fiscal year covered by this report.
Entity Central Index Key	0001841925
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Class A
Document Information [Line Items]
Title of 12(b) Security	Class A common stock, par value $0.0001 per share
Trading Symbol	INDI
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		113,230,759
Warrants
Document Information [Line Items]
Title of 12(b) Security	Warrants, each whole warrant exercisable for one share of Class A common stock for $11.50 per share
Trading Symbol	INDIW
Security Exchange Name	NASDAQ
Class V
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		28,119,808