| Cover | Dec. 10, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 10, 2021 |
| Entity File Number | 001-40957 |
| Entity Registrant Name | Pyrophyte Acquisition Corp. |
| Entity Central Index Key | 0001848756 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | 3262 Westheimer Road |
| Entity Address, Address Line Two | Suite 706 |
| Entity Address, City or Town | Houston |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77098 |
| City Area Code | 281 |
| Local Phone Number | 701-4234 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-half of one redeemable warrant [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-half of one redeemable warrant |
| Trading Symbol | PHYT.U |
| Security Exchange Name | NYSE |
| Common Class A [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A ordinary shares, par value $0.0001 par value |
| Trading Symbol | PHYT |
| Security Exchange Name | NYSE |
| Redeemable warrants, each warrant exercisable for one Class A ordinary share, each at an exercise price of $11.50 per share [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Redeemable warrants, each warrant exercisable for one Class A ordinary share, each at an exercise price of $11.50 per share |
| Trading Symbol | PHYT WS |
| Security Exchange Name | NYSE |
