STOCKHOLDERS’ EQUITY - Narrative (Details) $ / shares in Units, $ in Millions		1 Months Ended	5 Months Ended	12 Months Ended
	Jul. 23, 2021 $ / shares shares	Feb. 28, 2021 USD ($) $ / shares	Dec. 31, 2021 vote $ / shares shares	Dec. 31, 2021 USD ($) vote $ / shares shares	Mar. 31, 2022 $ / shares shares	Jul. 22, 2021 shares	Sep. 30, 2017 $ / shares shares
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)			10,000,000	10,000,000	10,000,000
Preferred stock, par value (in dollars per share) | $ / shares			$ 0.0001	$ 0.0001	$ 0.0001
Preferred stock, shares issued (in shares)			0	0	0
Preferred stock, shares outstanding (in shares)			0	0	0
Reverse recapitalization, shares issued (in shares)	425,395,023
Common stock, shares outstanding (in shares)	1,618,621,534		1,647,555,590	1,647,555,590	1,666,739,708	451,295,965
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001		$ 0.0001	$ 0.0001	$ 0.0001
Number of votes allowed per share | vote			1	1
Number of warrants (in shares)	85,750,000						2
Warrant exercise price (in dollars per share) | $ / shares	$ 11.50	$ 1.94					$ 1.94
Warrants exercised (in shares)				41,034,197
Warrants exercised, cashless (in shares)				25,966,976
Proceeds from the exercise of public warrants | $		$ 3.0		$ 173.3
Warrants redeemed (in shares)				365,803
Warrant, redemption price (in dollars per share) | $ / shares			$ 0.01	$ 0.01
Shares repurchased (in shares)				857,825
Shares repurchased, repurchase price (in dollars per share) | $ / shares				$ 24.15
Public Warrants
Class of Stock [Line Items]
Number of warrants (in shares)	41,400,000		0	0		41,400,000
Warrants exercised (in shares)			41,034,197
Warrants redeemed (in shares)			365,803
Legacy Preferred Shareholders
Class of Stock [Line Items]
Stock converted, after exchange ratio (in shares)	1,155,909,367
Employees
Class of Stock [Line Items]
Shares repurchased (in shares)				712,742
Directors of Atieva
Class of Stock [Line Items]
Shares repurchased (in shares)				145,083