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Noncontrolling Interests and Redeemable Noncontrolling Interests (Details) $ in Millions | 1 Months Ended
--- | ---
Dec. 31, 2021 | Oct. 31, 2019 | Apr. 30, 2018 USD ($) item
Cloud Music | Ordinary shares |  |  |
Noncontrolling Interests and Redeemable Noncontrolling Interests |  |  |
Stock re-designation/conversion ratio, into ordinary shares | 1 |  |
Youdao |  |  |
Noncontrolling Interests and Redeemable Noncontrolling Interests |  |  |
Aggregated cash consideration from issuance of preferred shares | $ |  |  | $ 70.0
Number of investors | item |  |  | 2
Youdao | Class A ordinary shares |  |  |
Noncontrolling Interests and Redeemable Noncontrolling Interests |  |  |
Stock re-designation/conversion ratio, into ordinary shares |  | 1 |

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