Cover - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 14, 2022	Jun. 30, 2021
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Entity File Number	001-41042
Entity Registrant Name	Rivian Automotive, Inc. / DE
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	14600 Myford Road
Entity Address, City or Town	Irvine
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92606
Entity Tax Identification Number	47-3544981
City Area Code	(888)
Local Phone Number	748-4261
Title of 12(b) Security	Class A common stock, $0.001 par value per share
Trading Symbol	RIVN
Security Exchange Name	NASDAQ
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	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Documents Incorporated by Reference	Portions of the registrant’s definitive Proxy Statement related to its 2022 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year ended December 31, 2021 are incorporated by reference into Part III of this Form 10-K.
Entity Public Float			$ 0
Entity Central Index Key	0001874178
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Amendment Flag	false
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Class A common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		892,726,857
Class B common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		7,825,000