| Document and Entity Information | Oct. 01, 2021 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001816708 |
| Document Type | 8-K |
| Document Period End Date | Oct. 1, 2021 |
| Entity Registrant Name | Owlet, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39516 |
| Entity Tax Identification Number | 85-1615012 |
| Entity Address, Address Line One | 2500 Executive Parkway |
| Entity Address, Address Line Two | Ste. 500 |
| Entity Address, City or Town | Lehi |
| Entity Address, State or Province | UT |
| Entity Address, Postal Zip Code | 84043 |
| City Area Code | (844) |
| Local Phone Number | 334-5330 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common stock, $0.0001 par value per share |
| Trading Symbol | OWLT |
| Security Exchange Name | NYSE |
| Warrant [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Warrants to purchase common stock |
| Trading Symbol | OWLT WS |
| Security Exchange Name | NYSE |
