STOCKHOLDERS’ EQUITY - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	May 31, 2023	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Nov. 08, 2022
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)		$ 0.0001		$ 0.0001		$ 0.0001
Preferred stock, shares issued (in shares)		0	0	0		0		0
Preferred stock, shares outstanding (in shares)		0	0	0		0		0
Shares repurchased (in shares)				0	0	0	0		857,825
Shares repurchased, repurchase price (in dollars per share)									$ 24.15
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
Equity Distribution Agreement
Class of Stock [Line Items]
Consideration to be received on agreement										$ 600.0
Number of shares issued (in shares)								56,203,334
Weighted average price (in dollars per share)			$ 10.68					$ 10.68
Net proceeds received			$ 594.3					$ 594.3
Commissions and other issuance cost								$ 5.7
Remaining number of shares available (in shares)						0
Private Placement | Ayar
Class of Stock [Line Items]
Consideration to be received on agreement	$ 1,800.0									$ 915.0
Number of shares issued (in shares)	265,693,703		85,712,679
Weighted average price (in dollars per share)	$ 6.83		$ 10.68					$ 10.68
Net proceeds received		$ 1,800.0	$ 915.0
Commissions and other issuance cost		2.0
Underwriting Agreement
Class of Stock [Line Items]
Consideration to be received on agreement	$ 1,200.0
Number of shares issued (in shares)	173,544,948
Weighted average price (in dollars per share)	$ 6.83
Net proceeds received		1,200.0
Commissions and other issuance cost		$ 1.1