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Related Party Transactions - Schedule of related party transactions (Detail) - CNY (¥) ¥ in Thousands | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019
Services and products provided to NetEase Group [Member] | Learning services provided to NetEase Group [Member] |  |
Related Party Transaction [Line Items] |  |
Related Party Transaction, Amounts of Transaction | ¥ 3,492 | ¥ 1,494
Services and products provided to NetEase Group [Member] | Learning products provided to NetEase Group [Member] |  |
Related Party Transaction [Line Items] |  |
Related Party Transaction, Amounts of Transaction | 6,362 | 7,118
Services and products provided to NetEase Group [Member] | Online marketing services provided to NetEase Group [Member] |  |
Related Party Transaction [Line Items] |  |
Related Party Transaction, Amounts of Transaction | 13,785 | 20,488
Services and products purchased from NetEase Group [Member] | Services purchased from NetEase Group [Member] |  |
Related Party Transaction [Line Items] |  |
Related Party Transaction, Amounts of Transaction | 121,124 | 52,200
Services and products purchased from NetEase Group [Member] | Fixed assets and inventories purchased from NetEase Group [Member] |  |
Related Party Transaction [Line Items] |  |
Related Party Transaction, Amounts of Transaction | 1,843 | 18,222
Loan related transactions [Member] | Interest expenses on short-term loans from NetEase Group [Member] |  |
Related Party Transaction [Line Items] |  |
Related Party Transaction, Amounts of Transaction | 23,369 | 22,379
Equity related transactions [Member] | Deemed contribution related to acquisition of businesses under common control [Member] |  |
Related Party Transaction [Line Items] |  |
Related Party Transaction, Amounts of Transaction |  | 69,603
Equity related transactions [Member] | Share-based compensation under NetEase Plan [Member] |  |
Related Party Transaction [Line Items] |  |
Related Party Transaction, Amounts of Transaction | 2,177 | ¥ 3,183
Equity related transactions [Member] | Deemed Distribution To NetEase [Member] |  |
Related Party Transaction [Line Items] |  |
Related Party Transaction, Amounts of Transaction | ¥ 2,060 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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