{"cik":1562088,"taxonomy":"us-gaap","tag":"CommonStockSharesOutstanding","label":"Common Stock, Shares, Outstanding","description":"Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.","entityName":"Duolingo, Inc.","units":{"shares":[{"end":"2020-06-30","val":13271000,"accn":"0001628280-21-016861","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-12","frame":"CY2020Q2I"},{"end":"2020-12-31","val":12794000,"accn":"0001628280-21-016861","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-12"},{"end":"2020-12-31","val":12794000,"accn":"0001562088-21-000026","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-12"},{"end":"2020-12-31","val":12794000,"accn":"0001562088-22-000039","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-04","frame":"CY2020Q4I"},{"end":"2021-12-31","val":16645000,"accn":"0001562088-22-000061","fy":2022,"fp":"Q1","form":"10-Q","filed":"2022-05-13","frame":"CY2021Q4I"}]}}