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Net (Loss) / Income Per Share (Tables) | 12 Months Ended
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Dec. 31, 2022
Earnings Per Share [Abstract] |
Schedule of Calculation of Net (Loss) / Income Per Share |
|  | As of December 31, |
|  | 2020 |  |  | 2021 |  |  | 2022 |
|  | RMB |  |  | RMB |  |  | RMB |
Numerator: |  |  |  |  |  |  |  |  |
Net (loss)/income attributable to Sunlands Technology Group used in basic and diluted net loss per share: |  |  |  |  |  |  |  |  |
Net (loss)/income attributable to ordinary shareholders |  |  | (430,542 | ) |  |  | 219,056 |  |  |  | 643,959 |
Denominator: |  |  |  |  |  |  |  |  |
Weighted average ordinary shares outstanding used in computing basic and diluted net (loss)/income per share |  |  | 6,754,134 |  |  |  | 6,727,552 |  |  |  | 6,840,079 |
Net (loss)/income per share |  |  |  |  |  |  |  |  |
Basic and diluted |  |  | (63.74 | ) |  |  | 32.56 |  |  |  | 94.14 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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