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Investments - Summary of Breakdown of Long-term Investments (Detail) ¥ in Millions, $ in Millions | Dec. 31, 2023 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 CNY (¥)
--- | --- | --- | ---
Schedule of Investments [Line Items] |  |  |
Equity investments without readily determinable fair value using the measurement alternative | ¥ 8,093 | $ 1,140 | ¥ 9,249
Equity method investments | 20,800 | 2,900 | 25,900
Total long-term investments | 47,957 | 6,755 | 55,297
Long Term Investments |  |  |
Schedule of Investments [Line Items] |  |  |
Equity investments at fair value with readily determinable fair value | 9,610 | 1,354 | 12,100
Equity investments without readily determinable fair value using the NAV practical expedient | 942 | 133 | 945
Equity investments without readily determinable fair value using the measurement alternative | 8,093 | 1,140 | 9,249
Available-for-sale debt investment | 3,682 | 519 | 2,447
Equity method investments | 20,789 | 2,927 | 25,940
Investments accounted for at fair value | 4,841 | 682 | 4,616
Total long-term investments | ¥ 47,957 | $ 6,755 | ¥ 55,297

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