| Document and Entity Information | Dec. 13, 2021 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | true |
| Entity Central Index Key | 0001819253 |
| Document Type | 8-K/A |
| Document Period End Date | Dec. 13, 2021 |
| Entity Registrant Name | Haymaker Acquisition Corp. III |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-40128 |
| Entity Tax Identification Number | 85-1791125 |
| Entity Address, Address Line One | 501 Madison Avenue |
| Entity Address, Address Line Two | Floor 12 |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10022 |
| City Area Code | (212) |
| Local Phone Number | 616-9600 |
| Written Communications | false |
| Soliciting Material | true |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Amendment Description | This Amendment supplements Item 9.01 (solely to add additional exhibits) of the Current Report on Form 8-K of Haymaker Acquisition Corp. III, a Delaware corporation (the “Company”), filed with the Securities and Exchange Commission (the “SEC”) on December 13, 2021 (the “Original Current Report”), in which the Company reported, among other events, the execution of the Business Combination Agreement (as defined in the Original Current Report). Item 1.01, Item 3.02, Item 7.01 and Item 8.01 of the Original Current Report remain unchanged. Interested parties should refer to the Original Current Report for Item 1.01, Item 3.02, Item 7.01 and Item 8.01 and the prior exhibits filed pursuant to Item 9.01. |
| Units Each Consisting Of One Share Of Class A Common Stock And One Fourth Of One Redeemable Warrant [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Units, each consisting of one share of Class A common stock and one-fourth of one redeemable warrant |
| Trading Symbol | HYACU |
| Security Exchange Name | NASDAQ |
| Common Class A [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A common stock, par value $0.0001 per share |
| Trading Symbol | HYAC |
| Security Exchange Name | NASDAQ |
| Warrants Each Whole Warrant Exercisable For One Share Of Class A Common Stock For 11.50 Per Share [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Warrants, each whole warrant exercisable for one share of Class A common stock for $11.50 per share |
| Trading Symbol | HYACW |
| Security Exchange Name | NASDAQ |
