| Cover Page | 12 Months Ended |
| Dec. 31, 2023 |
| Document Information [Line Items] | |
| Document Type | POS AM |
| Amendment Flag | true |
| Document Fiscal Year Focus | 2023 |
| Document Fiscal Period Focus | FY |
| Entity Registrant Name | The Beachbody Company, Inc. |
| Entity Central Index Key | 0001826889 |
| Entity Filer Category | Non-accelerated Filer |
| Entity Small Business | true |
| Entity Emerging Growth Company | false |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 85-3222090 |
| Entity Address, Address Line One | 400 Continental Blvd |
| Entity Address, Address Line Two | Suite 400 |
| Entity Address, City or Town | El Segundo |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 90245 |
| City Area Code | 310 |
| Local Phone Number | 883-9000 |
| Entity Primary SIC Number | 3600 |
| Amendment Description | EXPLANATORY NOTE This Pre-Effective Amendment No. 1 (this “Pre-Effective Amendment”) to Post-Effective Amendment No. 1 (the “Post-Effective Amendment”) to the Registration Statement on Form S-1 (File No. 333-258149) initially filed July 23, 2021 and declared effective by the Securities and Exchange Commission (the “SEC”) on August 6, 2021 (the “Registration Statement”), is being filed to correct a hyperlink error for Exhibit 5.1 to the Post-Effective Amendment. No other changes have been made to the Post-Effective Amendment or the Registration Statement. Accordingly, this Pre-Effective Amendment consists only of the facing page, this explanatory note and Part II to the Registration Statement. All applicable registration fees were paid at the time of the original filing of the Registration Statement. |
| Business Contact [Member] | |
| Document Information [Line Items] | |
| Entity Address, Address Line One | 400 Continental Blvd |
| Entity Address, Address Line Two | Suite 400 |
| Entity Address, City or Town | El Segundo |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 90245 |
| City Area Code | 310 |
| Local Phone Number | 883-9000 |
| Contact Personnel Name | Carl Daikeler |
