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Business Combinations - Additional Information (Detail) ¥ in Millions, $ in Millions | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jan. 31, 2023 CNY (¥) | Feb. 28, 2021 USD ($) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 CNY (¥) | Feb. 28, 2021 CNY (¥) | Feb. 28, 2021 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Purchase consideration | ¥ |  |  | ¥ 326 |  |  |  |  |
Goodwill |  |  | 22,605 | ¥ 22,586 | $ 3,181 | ¥ 22,477 |  |
Restricted Cash, Current, Statement of Financial Position [Extensible Enumeration] |  |  |  | Restricted Cash and Cash Equivalents, Current | Restricted Cash and Cash Equivalents, Current |  |  |
JOYY [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Restricted cash | $ |  |  |  |  | $ 1,600 |  |  |
Business Combinations 2023 | JOYY [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Purchase consideration | $ |  | $ 1,900 |  |  |  |  |  |
Working capital adjustment of purchase price | $ |  |  |  |  |  |  |  | $ 100
Restricted cash | ¥ |  |  |  |  |  |  | ¥ 1,600 |
Business Combinations 2023 | JOYY [Member] | Other Noncurrent Assets [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Other assets, noncurrent | $ |  |  |  |  | $ 1,900 |  |  |
Business Combinations |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Goodwill | ¥ | ¥ 114 |  | ¥ 357 |  |  |  |  |
Percentage of voting equity interests acquired at the acquisition date | 100.00% |  |  |  |  |  |  |
Total cash consideration | ¥ | ¥ 130 |  |  |  |  |  |  |

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