Condensed Consolidated Statements of Stockholders’ Equity (Deficit) - USD ($) $ in Thousands		Total	The9 Conditional Obligation	Related party notes payable	Notes payable	Previously Reported	Retroactive application of recapitalization	Additional Paid-in Capital	Additional Paid-in Capital The9 Conditional Obligation	Additional Paid-in Capital Related party notes payable	Additional Paid-in Capital Notes payable	Additional Paid-in Capital Previously Reported	Additional Paid-in Capital Retroactive application of recapitalization	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Previously Reported	Accumulated Other Comprehensive Loss Retroactive application of recapitalization	Accumulated Deficit	Accumulated Deficit Previously Reported	Accumulated Deficit Retroactive application of recapitalization	Redeemable Preference Stock	Redeemable Preference Stock Previously Reported	Redeemable Preference Stock Retroactive application of recapitalization	Class B Convertible Preferred Stock	Class B Convertible Preferred Stock Previously Reported	Class B Convertible Preferred Stock Retroactive application of recapitalization	Class A Ordinary Stock Common Stock	Class A Ordinary Stock Common Stock Previously Reported	Class A Ordinary Stock Common Stock Retroactive application of recapitalization	Class A Common Stock Common Stock		Class A Common Stock Common Stock The9 Conditional Obligation	Class A Common Stock Common Stock Related party notes payable		Class A Common Stock Common Stock Notes payable		Class A Common Stock Common Stock Previously Reported	Class A Common Stock Common Stock Retroactive application of recapitalization	Class B Common Stock Common Stock		Class B Common Stock Common Stock The9 Conditional Obligation	[2]	Class B Common Stock Common Stock Previously Reported	Class B Common Stock Common Stock Retroactive application of recapitalization
Beginning balance (in shares) at Dec. 31, 2019	[1]																			0	470,588,235	(470,588,235)	0	600,000,000	(600,000,000)
Beginning balance at Dec. 31, 2019																				$ 0	$ 724,823	$ (724,823)	$ 0	$ 924,149	$ (924,149)
Ending balance (in shares) at Sep. 30, 2020	[1]																			0			0
Ending balance at Sep. 30, 2020																				$ 0			$ 0
Beginning balance (in shares) at Dec. 31, 2019	[1]																									0	40,879,124	(40,879,124)	72,269,976							0	72,269,976	84,780,000				0	84,780,000
Beginning balance at Dec. 31, 2019		$ (439,662)				$ (2,088,634)	$ 1,648,972	$ 1,807,661				$ 158,704	$ 1,648,957	$ (3,284)	$ (3,284)	$ 0	$ (2,244,054)	$ (2,244,054)	$ 0							$ 0	$ 0	$ 0	$ 7							$ 0	$ 7	$ 8				$ 0	$ 8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation		7,066						7,066
Exercise of stock options (in shares)	[1]																												16,048
Exercise of stock options		31						31
Issuance of warrants		490						490
Foreign currency translation adjustment		(1,392)												(1,392)
Net loss		(89,136)															(89,136)
Ending balance (in shares) at Sep. 30, 2020	[1]																									0			72,286,024									84,780,000
Ending balance at Sep. 30, 2020		(522,603)						1,815,248						(4,676)			(2,333,190)									$ 0			$ 7									$ 8
Beginning balance (in shares) at Jun. 30, 2020	[1]																			0			0
Beginning balance at Jun. 30, 2020																				$ 0			$ 0
Ending balance (in shares) at Sep. 30, 2020	[1]																			0			0
Ending balance at Sep. 30, 2020																				$ 0			$ 0
Beginning balance (in shares) at Jun. 30, 2020	[1]																									0			72,275,052									84,780,000
Beginning balance at Jun. 30, 2020		(490,023)						1,811,320						(1,507)			(2,299,851)									$ 0			$ 7									$ 8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation		3,415						3,415
Exercise of stock options (in shares)	[1]																												10,972
Exercise of stock options		23						23
Issuance of warrants		490						490
Foreign currency translation adjustment		(3,169)												(3,169)
Net loss		(33,339)															(33,339)
Ending balance (in shares) at Sep. 30, 2020	[1]																									0			72,286,024									84,780,000
Ending balance at Sep. 30, 2020		(522,603)						1,815,248						(4,676)			(2,333,190)									$ 0			$ 7									$ 8
Beginning balance (in shares) at Dec. 31, 2020	[2]																												93,099,596									64,000,588
Beginning balance at Dec. 31, 2020		(579,338)						1,817,760						(5,974)			(2,391,139)												$ 9									$ 6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of convertible securities (in shares)																															423,053	22,454,776	[2]	7,688,153	[2]					0
Conversion of convertible securities			$ 2,863	$ 294,796	$ 98,375				$ 2,863	$ 294,794	$ 98,374																					$ 2		$ 1
Issuance of Class A Common Stock in the Business Combination, net of transaction costs (in shares)	[2]																												27,798,411
Issuance of Class A Common Stock in the Business Combination, net of transaction costs		170,114						170,111																					$ 3
Conversion of assumed PSAC convertible and promissory notes payable into Class A Common Stock (in shares)	[2]																												80,000
Conversion of assumed convertible and promissory notes payable into Class A Common Stock		790						790
Conversion of liabilities into Class A Common Stock in the Business Combination (in shares)	[2]																												20,666,825
Conversion of liabilities into Class A Common Stock in the Business Combination		285,337						285,335																					$ 2
Conversion of liabilities into the commitment to issue Class A Common Stock in the Business Combination		52,338						52,338
Legacy FF Ordinary Stock exchanged in the Business Combination for a commitment to issue Class A and Class B Common Stock (in shares)																													(117,839,510)									(64,000,588)
Legacy FF Ordinary Stock exchanged in the Business Combination for a commitment to issue Class A and Class B Common Stock		0						18																					$ (12)									$ (6)
Issuance of Class A Common Stock in the PIPE Financing, net of transaction costs (in shares)	[2]																												76,140,000
Issuance of Class A Common Stock in the PIPE Financing, net of transaction costs		692,405						692,397																					$ 8
Settlement of lawsuit and accrued expenses with issuance of stock options		8,459						8,459
Settlement of accrued rent with issuance of vested stock options		951						951
Vesting of restricted stock award for employee bonus (in shares)	[2]																												0
Vesting of restricted stock award for employee bonus		14,620						14,620
Stock-based compensation		8,521						8,521
Exercise of stock options (in shares)	[2]																												4,326,920
Exercise of stock options		10,492						10,492
Settlement of receivables through receipt of Class A Common Stock (in shares)	[2]																												(43,096)
Settlement of receivables through receipt of Class A Common Stock		(105)						(105)
Issuance of warrants		17,596						17,596
Foreign currency translation adjustment		(487)												(487)
Net loss		(432,206)															(432,206)
Ending balance (in shares) at Sep. 30, 2021																													134,795,128	[2]								0	[3]
Ending balance at Sep. 30, 2021		645,521						3,475,314						(6,461)			(2,823,345)												$ 13									$ 0
Beginning balance (in shares) at Jun. 30, 2021	[3]																												107,659,654									64,000,588
Beginning balance at Jun. 30, 2021		(552,759)						1,973,314						(6,650)			(2,519,439)												$ 10									$ 6
Beginning balance (in shares) at Jun. 30, 2021	[3]																												107,659,654									64,000,588
Beginning balance at Jun. 30, 2021		(552,759)						1,973,314						(6,650)			(2,519,439)												$ 10									$ 6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of convertible securities (in shares)	[3]																															11,566,196		7,688,153
Conversion of convertible securities				$ 160,437	$ 98,375					$ 160,436	$ 98,374																					$ 1		$ 1
Issuance of Class A Common Stock in the Business Combination, net of transaction costs (in shares)	[3]																												27,798,411
Issuance of Class A Common Stock in the Business Combination, net of transaction costs		170,114						170,111																					$ 3
Conversion of assumed PSAC convertible and promissory notes payable into Class A Common Stock (in shares)	[3]																												80,000
Conversion of assumed convertible and promissory notes payable into Class A Common Stock		790						790
Conversion of liabilities into Class A Common Stock in the Business Combination (in shares)	[3]																												20,666,825
Conversion of liabilities into Class A Common Stock in the Business Combination		285,337						285,335																					$ 2
Conversion of liabilities into the commitment to issue Class A Common Stock in the Business Combination		52,338						52,338
Legacy FF Ordinary Stock exchanged in the Business Combination for a commitment to issue Class A and Class B Common Stock (in shares)																													(117,839,510)									(64,000,588)
Legacy FF Ordinary Stock exchanged in the Business Combination for a commitment to issue Class A and Class B Common Stock		0						18																					$ (12)									$ (6)
Issuance of Class A Common Stock in the PIPE Financing, net of transaction costs (in shares)	[3]																												76,140,000
Issuance of Class A Common Stock in the PIPE Financing, net of transaction costs		692,405						692,397																					$ 8
Settlement of lawsuit and accrued expenses with issuance of stock options		8,459						8,459
Settlement of accrued rent with issuance of vested stock options		951						951
Vesting of restricted stock award for employee bonus		14,620						14,620
Stock-based compensation		5,053						5,053
Exercise of stock options (in shares)	[3]																												1,078,495
Exercise of stock options		2,740						2,740
Settlement of receivables through receipt of Class A Common Stock (in shares)	[3]																												(43,096)
Settlement of receivables through receipt of Class A Common Stock		(105)						(105)
Issuance of warrants		10,483						10,483
Foreign currency translation adjustment		189												189
Net loss		(303,906)															(303,906)
Ending balance (in shares) at Sep. 30, 2021																													134,795,128	[2]								0	[3]
Ending balance at Sep. 30, 2021		$ 645,521						$ 3,475,314						$ (6,461)			$ (2,823,345)												$ 13									$ 0

[1] The shares of the Company’s common stock prior to the Business Combination (as defined in Note 1) have been retrospectively recast to reflect the change in the capital structure as a result of the Business Combination as described in Note 3.

[2] The shares of the Company’s common stock prior to the Business Combination (as defined in Note 1) have been retrospectively recast to reflect the change in the capital structure as a result of the Business Combination as described in Note 3.

[3] The shares of the Company’s common stock prior to the Business Combination (as defined in Note 1) have been retrospectively recast to reflect the change in the capital structure as a result of the Business Combination as described in Note 3.