Business Combination - Retroactive Application of Reverse Recapitalization to the Condensed Consolidated Statements of Stockholders’ Equity (Deficit) (Details)		9 Months Ended
	Jul. 21, 2021 shares	Sep. 30, 2021 shares	Jul. 20, 2021 shares
Business Acquisition [Line Items]
Exchange Ratio	0.14130
Converted into shares of FFIE common stock (in shares)	244,293,395
Legacy FF Shareholders | Legacy FF
Business Acquisition [Line Items]
Outstanding shares (in shares)			1,358,459,707
Redeemable Preference Stock
Business Acquisition [Line Items]
Exchange Ratio	0.14130
Redeemable Preference Stock | Legacy FF Shareholders
Business Acquisition [Line Items]
Converted into shares of FFIE common stock (in shares)		66,494,117
Redeemable Preference Stock | Legacy FF Shareholders | Legacy FF
Business Acquisition [Line Items]
Outstanding shares (in shares)			470,588,235
Class B Convertible Preferred Stock
Business Acquisition [Line Items]
Exchange Ratio	0.14130
Class B Convertible Preferred Stock | Legacy FF Shareholders
Business Acquisition [Line Items]
Converted into shares of FFIE common stock (in shares)		64,000,588
Class B Convertible Preferred Stock | Legacy FF Shareholders | Legacy FF
Business Acquisition [Line Items]
Outstanding shares (in shares)			452,941,177
Class A-1 Convertible Preferred Stock
Business Acquisition [Line Items]
Exchange Ratio	0.14130
Class A-1 Convertible Preferred Stock | Legacy FF Shareholders
Business Acquisition [Line Items]
Converted into shares of FFIE common stock (in shares)		10,358,162
Class A-1 Convertible Preferred Stock | Legacy FF Shareholders | Legacy FF
Business Acquisition [Line Items]
Outstanding shares (in shares)			73,306,184
Class A-2 Convertible Preferred Stock
Business Acquisition [Line Items]
Exchange Ratio	0.14130
Class A-2 Convertible Preferred Stock | Legacy FF Shareholders
Business Acquisition [Line Items]
Converted into shares of FFIE common stock (in shares)		19,603,624
Class A-2 Convertible Preferred Stock | Legacy FF Shareholders | Legacy FF
Business Acquisition [Line Items]
Outstanding shares (in shares)			138,737,629
Class A-3 Convertible Preferred Stock
Business Acquisition [Line Items]
Exchange Ratio	0.14130
Class A-3 Convertible Preferred Stock | Legacy FF Shareholders
Business Acquisition [Line Items]
Converted into shares of FFIE common stock (in shares)		181,143
Class A-3 Convertible Preferred Stock | Legacy FF Shareholders | Legacy FF
Business Acquisition [Line Items]
Outstanding shares (in shares)			1,281,976
Class A Ordinary Stock
Business Acquisition [Line Items]
Exchange Ratio	0.14130
Class A Ordinary Stock | Legacy FF Shareholders
Business Acquisition [Line Items]
Converted into shares of FFIE common stock (in shares)		10,109,892
Class A Ordinary Stock | Legacy FF Shareholders | Legacy FF
Business Acquisition [Line Items]
Outstanding shares (in shares)			71,551,672
Class B Ordinary Stock
Business Acquisition [Line Items]
Exchange Ratio	0.14130
Class B Ordinary Stock | Legacy FF Shareholders
Business Acquisition [Line Items]
Converted into shares of FFIE common stock (in shares)		21,202,465
Class B Ordinary Stock | Legacy FF Shareholders | Legacy FF
Business Acquisition [Line Items]
Outstanding shares (in shares)			150,052,834
Class A Ordinary Stock | Legacy FF Shareholders
Business Acquisition [Line Items]
Converted into shares of FFIE common stock (in shares)	127,949,403	127,949,403
Class B Ordinary Stock | Legacy FF Shareholders
Business Acquisition [Line Items]
Converted into shares of FFIE common stock (in shares)	64,000,588	64,000,588