Equity (Details) $ / shares in Units, $ in Thousands				1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 23, 2023 USD ($) shares	Sep. 09, 2022 USD ($)	Aug. 20, 2021 USD ($) $ / shares shares	Feb. 28, 2021 shares	Mar. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) vote shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) vote shares
Stockholders' Equity And Temporary Equity [Line Items]
Stock authorized (in shares)							1,010,000,000
Common stock, authorized (in shares)							1,000,000,000	1,000,000,000
Common stock, par value (in dollars per share) | $ / shares			$ 0.0001				$ 0.0001	$ 0.0001
Preferred stock, authorized (in shares)							10,000,000	10,000,000
Preferred stock, par value (in dollars per share) | $ / shares			$ 0.0001				$ 0.0001	$ 0.0001
Number of votes per share | vote						1			1
Issuance of preferred shares (in shares)				76,471				49,518,000
Number of warrants issued (in shares)								1
Conversion of interest payable on convertible notes (in shares)								319,411
Issuance of Legacy Xos Preferred Stock, incl. note conversion | $								$ 66,701
Temporary equity, conversion of convertible securities | $		$ 2,000						$ (79,708)
Temporary equity, conversion of convertible securities (in shares)								(52,905,000)
Sale of stock, number of shares issued in transaction (in shares)			19,600,000				1,809,515
Sale of stock, consideration received on transaction | $			$ 196,000				$ 4,300
Sale of Stock, Remaining Commitment Amount Available | $							$ 120,700
Standby Equity Purchase Agreement | Subsequent Event
Stockholders' Equity And Temporary Equity [Line Items]
Sale of Stock, Maximum Consideration To Be Received on Transaction | $	$ 125,000
Sale Of Stock, Request Period In Force	36 months
Sale of stock, number of shares issued in transaction (in shares)	18,582
Legacy Xos
Stockholders' Equity And Temporary Equity [Line Items]
Legacy Xos preferred stock authorized (in shares)						25,794,475			25,794,475
Issuance of preferred shares (in shares)					3,739,846	1,411,764
Number of warrants issued (in shares)						1			1
Conversion of interest payable on convertible notes (in shares)						319,411			319,411
Issuance of Legacy Xos Preferred Stock, incl. note conversion | $					$ 31,800	$ 9,600
Temporary equity, subscribed but unissued, subscriptions receivable (in shares) | $						$ 2,400			$ 2,400
Temporary equity, conversion of convertible securities | $									21,500
Conversion of convertible securities, accrued interest | $									$ 2,500
Temporary equity, conversion of convertible securities (in shares)									21,570,308
Reduction of fair value of non-voting shares, percentage									3.00%