{"cik":1581280,"taxonomy":"us-gaap","tag":"LongTermDebt","label":"Long-term Debt","description":"Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.","entityName":"Twist Bioscience Corporation","units":{"USD":[{"end":"2019-09-30","val":7500000,"accn":"0001193125-19-313115","fy":2019,"fp":"FY","form":"10-K","filed":"2019-12-13","frame":"CY2019Q3I"},{"end":"2020-09-30","val":4166000,"accn":"0001193125-20-303904","fy":2020,"fp":"FY","form":"10-K","filed":"2020-11-27","frame":"CY2020Q3I"}]}}