| Document and Entity Information | Jul. 25, 2022 |
| Document Information [Line Items] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Document Period End Date | Jul. 25, 2022 |
| Entity Registrant Name | FRAZIER LIFESCIENCES ACQUISITION CORPORATION |
| Entity Incorporation, State or Country Code | E9 |
| Entity File Number | 001-39765 |
| Entity Tax Identification Number | 98-1562203 |
| Entity Address, Address Line One | Two Union Square |
| Entity Address, Address Line Two | 601 Union St |
| Entity Address, Address Line Three | Suite 3200 |
| Entity Address, City or Town | Seattle |
| Entity Address, State or Province | WA |
| Entity Address, Postal Zip Code | 98101 |
| City Area Code | 206 |
| Local Phone Number | 621-7200 |
| Written Communications | true |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Amendment Description | On July 25, 2022, Frazier Lifesciences Acquisition Corporation (the “Issuer”) filed a Current Report on 8-K (the “Original Report”) to disclose, among other things, the Issuer’s entry into a definitive business combination agreement with NewAmsterdam Pharma Company B.V., and the related PIPE transaction. This Amendment No. 1 on Form 8-K/A (the “New Report”) is being filed solely to replace Exhibit 99.2 of the Original Report with the final version of the investor presentation, attached as Exhibit 99.2 to this New Report, which final version of the investor presentation reflects the upsized and final quantum of the PIPE, and to correct certain typographical errors in the Original Report. Capitalized terms used but not defined in this Explanatory Note are defined below. |
| Entity Central Index Key | 0001828326 |
| Units, each consisting of one Class A ordinary share and one-third of a Warrant to acquire one Class A ordinary share [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one Class A ordinary share andone-thirdof a Warrant to acquire one Class A ordinary share |
| Trading Symbol | FLACU |
| Security Exchange Name | NASDAQ |
| Class A Common Stock Subject To Possible Redemption [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A Ordinary Shares included as part of the units |
| Trading Symbol | FLAC |
| Security Exchange Name | NASDAQ |
| Warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Redeemable warrants included as part of the units, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50 |
| Trading Symbol | FLACW |
| Security Exchange Name | NASDAQ |
