{"cik":1821468,"taxonomy":"us-gaap","tag":"RevenueFromContractWithCustomerExcludingAssessedTax","label":"Revenue from Contract with Customer, Excluding Assessed Tax","description":"Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.","entityName":"17 Education & Technology Group Inc.","units":{"CNY":[{"start":"2018-01-01","end":"2018-12-31","val":310706000,"accn":"0001564590-21-018346","fy":2020,"fp":"FY","form":"20-F","filed":"2021-04-09","frame":"CY2018"},{"start":"2019-01-01","end":"2019-12-31","val":406245000,"accn":"0001564590-21-018346","fy":2020,"fp":"FY","form":"20-F","filed":"2021-04-09"},{"start":"2019-01-01","end":"2019-12-31","val":406245000,"accn":"0001564590-22-016093","fy":2021,"fp":"FY","form":"20-F","filed":"2022-04-27","frame":"CY2019"},{"start":"2020-01-01","end":"2020-12-31","val":1294371000,"accn":"0001564590-21-018346","fy":2020,"fp":"FY","form":"20-F","filed":"2021-04-09"},{"start":"2020-01-01","end":"2020-12-31","val":1294371000,"accn":"0001564590-22-016093","fy":2021,"fp":"FY","form":"20-F","filed":"2022-04-27"},{"start":"2020-01-01","end":"2020-12-31","val":1294371000,"accn":"0000950170-23-014550","fy":2022,"fp":"FY","form":"20-F","filed":"2023-04-26","frame":"CY2020"},{"start":"2021-01-01","end":"2021-12-31","val":2184520000,"accn":"0001564590-22-016093","fy":2021,"fp":"FY","form":"20-F","filed":"2022-04-27"},{"start":"2021-01-01","end":"2021-12-31","val":2184520000,"accn":"0000950170-23-014550","fy":2022,"fp":"FY","form":"20-F","filed":"2023-04-26"},{"start":"2021-01-01","end":"2021-12-31","val":2184520000,"accn":"0000950170-24-047905","fy":2023,"fp":"FY","form":"20-F","filed":"2024-04-25","frame":"CY2021"},{"start":"2022-01-01","end":"2022-12-31","val":531064000,"accn":"0000950170-23-014550","fy":2022,"fp":"FY","form":"20-F","filed":"2023-04-26"},{"start":"2022-01-01","end":"2022-12-31","val":531064000,"accn":"0000950170-24-047905","fy":2023,"fp":"FY","form":"20-F","filed":"2024-04-25"},{"start":"2022-01-01","end":"2022-12-31","val":531064000,"accn":"0000950170-25-058824","fy":2024,"fp":"FY","form":"20-F","filed":"2025-04-25","frame":"CY2022"},{"start":"2023-01-01","end":"2023-12-31","val":170962000,"accn":"0000950170-24-047905","fy":2023,"fp":"FY","form":"20-F","filed":"2024-04-25"},{"start":"2023-01-01","end":"2023-12-31","val":170962000,"accn":"0000950170-25-058824","fy":2024,"fp":"FY","form":"20-F","filed":"2025-04-25"},{"start":"2023-01-01","end":"2023-12-31","val":170962000,"accn":"0001193125-26-191472","fy":2025,"fp":"FY","form":"20-F","filed":"2026-04-29","frame":"CY2023"},{"start":"2024-01-01","end":"2024-12-31","val":189212000,"accn":"0000950170-25-058824","fy":2024,"fp":"FY","form":"20-F","filed":"2025-04-25"},{"start":"2024-01-01","end":"2024-12-31","val":189212000,"accn":"0001193125-26-191472","fy":2025,"fp":"FY","form":"20-F","filed":"2026-04-29","frame":"CY2024"},{"start":"2025-01-01","end":"2025-12-31","val":106024000,"accn":"0001193125-26-191472","fy":2025,"fp":"FY","form":"20-F","filed":"2026-04-29","frame":"CY2025"}],"USD":[{"start":"2020-01-01","end":"2020-12-31","val":198371000,"accn":"0001564590-21-018346","fy":2020,"fp":"FY","form":"20-F","filed":"2021-04-09","frame":"CY2020"},{"start":"2021-01-01","end":"2021-12-31","val":342799000,"accn":"0001564590-22-016093","fy":2021,"fp":"FY","form":"20-F","filed":"2022-04-27","frame":"CY2021"},{"start":"2022-01-01","end":"2022-12-31","val":76997000,"accn":"0000950170-23-014550","fy":2022,"fp":"FY","form":"20-F","filed":"2023-04-26","frame":"CY2022"},{"start":"2023-01-01","end":"2023-12-31","val":24079000,"accn":"0000950170-24-047905","fy":2023,"fp":"FY","form":"20-F","filed":"2024-04-25","frame":"CY2023"},{"start":"2024-01-01","end":"2024-12-31","val":25922000,"accn":"0000950170-25-058824","fy":2024,"fp":"FY","form":"20-F","filed":"2025-04-25","frame":"CY2024"},{"start":"2025-01-01","end":"2025-12-31","val":15161000,"accn":"0001193125-26-191472","fy":2025,"fp":"FY","form":"20-F","filed":"2026-04-29","frame":"CY2025"}]}}