STOCKHOLDERS’ EQUITY - Narrative (Details) $ / shares in Units, $ in Millions		1 Months Ended	3 Months Ended		5 Months Ended	6 Months Ended		12 Months Ended
	Jul. 23, 2021 $ / shares shares	Feb. 28, 2021 USD ($) $ / shares	Jun. 30, 2022 vote $ / shares shares	Jun. 30, 2021 shares	Dec. 31, 2021 $ / shares shares	Jun. 30, 2022 vote $ / shares shares	Jun. 30, 2021 shares	Dec. 31, 2021 USD ($) $ / 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		10,000,000
Preferred stock, par value (in dollars per share) | $ / shares			$ 0.0001		$ 0.0001	$ 0.0001		$ 0.0001
Preferred stock, shares issued (in shares)			0		0	0		0
Preferred stock, shares outstanding (in shares)			0		0	0		0
Reverse recapitalization, shares issued (in shares)	425,395,023
Common stock, shares outstanding (in shares)	1,618,621,534		1,672,543,611		1,647,555,590	1,672,543,611		1,647,555,590	451,295,965
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001		$ 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
Number of securities called by each warrant (in shares)			1			1
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)			0	0		0	0	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
Board of Directors of Atieva
Class of Stock [Line Items]
Shares repurchased (in shares)								145,083