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Fair Value Measurements - Schedule of Available-for-sale debt investments (Detail) ¥ in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2023 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 CNY (¥)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax | OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax | OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
Available-for-sale Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Begining Balance | ¥ 2,447 |  | ¥ 2,262
Additions | 313 |  | 10
Disposals | (332) |  |
Conversion from equity investment |  |  | 657
Conversion | 838 |  |
Share of losses in excess of equity method investment in ordinary shares | (7) |  | (161)
Net unrealized fair value change recognized in other comprehensive (loss) income | (71) |  | (432)
Accrued interest | 76 |  | 78
Foreign currency translation adjustments | (5) |  | 33
Ending balance | ¥ 3,259 | $ 459 | ¥ 2,447

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- Definition Fair value measurement with significant unobservable input conversion from equity investments to debt. + References No definition available. + Details
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- Definition Fair value measurement with unobservable inputs reconciliation recurring basis asset share of losses in excess of equity method investment in ordinary shares. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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