| Cover | Aug. 20, 2021 |
| Affiliate, Collateralized Security [Line Items] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | On August 26, 2021, Xos, Inc., a Delaware corporation (the “Company”) (f/k/a NextGen Acquisition Corporation (“NextGen”)), filed a Current Report on Form 8-K (the “Original Report”) to report the Closing and related matters under Items 1.01, 2.01, 3.02, 4.01, 5.01, 5.02, 5.06 and 9.01 of Form 8-K. Due to the large number of events to be reported under the specified items of Form 8-K, this Amendment No. 1 to Form 8-K (this “Amendment No. 1”) is being filed to amend the Original Report to include additional matters related to the Business Combination under Items 3.03, 5.03 and 5.05 of Form 8-K. Capitalized terms used herein by not defined herein have the meanings given to such terms in the Original Report. |
| Document Period End Date | Aug. 20, 2021 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-39598 |
| Entity Registrant Name | XOS INC. |
| Entity Central Index Key | 0001819493 |
| Entity Tax Identification Number | 98-1550505 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 3550 Tyburn Street |
| Entity Address, Address Line Two | Unit 100 |
| Entity Address, City or Town | Los Angeles |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 90065 |
| City Area Code | (818) |
| Local Phone Number | 316-1890 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Common Stock, $0.0001 par value per share | |
| Affiliate, Collateralized Security [Line Items] | |
| Title of 12(b) Security | Common Stock, $0.0001 par value per share |
| Trading Symbol | XOS |
| Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50 per share | |
| Affiliate, Collateralized Security [Line Items] | |
| Title of 12(b) Security | Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50 per share |
| Trading Symbol | XOSWW |
