Document and Entity Information  | 
May 10, 2024  | 
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| Cover [Abstract] | |
| Amendment Flag | true | 
| Entity Central Index Key | 0001802156 | 
| Document Type | 8-K/A | 
| Document Period End Date | May 10, 2024 | 
| Entity Registrant Name | XPONENTIAL FITNESS, INC. | 
| Entity Incorporation State Country Code | DE | 
| Entity File Number | 001-40638 | 
| Entity Tax Identification Number | 84-4395129 | 
| Entity Address, Address Line One | 17877 Von Karman Avenue | 
| Entity Address, Address Line Two | Suite 100 | 
| Entity Address, City or Town | Irvine | 
| Entity Address, State or Province | CA | 
| Entity Address, Postal Zip Code | 92614 | 
| City Area Code | (949) | 
| Local Phone Number | 346-3000 | 
| Written Communications | false | 
| Soliciting Material | false | 
| Pre Commencement Tender Offer | false | 
| Pre Commencement Issuer Tender Offer | false | 
| Security 12b Title | Class A Common Stock, par value $0.0001 per share | 
| Trading Symbol | XPOF | 
| Security Exchange Name | NYSE | 
| Entity Emerging Growth Company | true | 
| Entity Ex Transition Period | false | 
| Amendment Description | This Current Report on Form 8-K/A (this “Current Report”) amends the Current Report on Form 8-K filed by Xponential Fitness, Inc. (the “Company”) with the Securities and Exchange Commission (the “SEC”) on May 10, 2024 (the “Original Report”) and is being filed in order to supplement the Company’s disclosure under Items 5.02 and 8.01 of the Original Report. The Original Report otherwise remains unchanged. | 
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- Definition Description of changes contained within amended document. No definition available. 
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- Definition Boolean flag that is true when the XBRL content amends previously-filed or accepted submission. No definition available. 
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- Definition Area code of city No definition available. 
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- Definition Cover page. No definition available. 
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- Definition For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD. No definition available. 
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- Definition The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'. No definition available. 
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- Definition Address Line 1 such as Attn, Building Name, Street Name No definition available. 
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- Definition Address Line 2 such as Street or Suite number No definition available. 
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- Definition Name of the City or Town No definition available. 
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- Definition Code for the postal or zip code No definition available. 
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- Definition Name of the state or province. No definition available. 
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- Definition A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Indicate if registrant meets the emerging growth company criteria. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Indicate if an emerging growth company has elected not to use the extended transition period for complying with any new or revised financial accounting standards. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen. No definition available. 
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- Definition Two-character EDGAR code representing the state or country of incorporation. No definition available. 
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- Definition The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Local phone number for entity. No definition available. 
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- Definition Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Title of a 12(b) registered security. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Name of the Exchange on which a security is registered. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Trading symbol of an instrument as listed on an exchange. No definition available. 
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- Definition Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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