v3.22.1

Fair Value Measurements - Schedule of Available-for-sale debt investments (Detail) - Available-for-sale Securities [Member] ¥ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Begining Balance	¥ 2,607		¥ 3,970
Additions	67		5
Disposals			(500)
Reclassification			412
Conversion to equity investment	(18)		(1,355)
Share of losses in excess of equity method investment in ordinary shares	(207)		(82)
Net unrealized fair value change recognized in other comprehensive income	(243)		153
Accrued interest	75		68
Foreign currency translation adjustments	(19)		(64)
Ending balance	¥ 2,262	$ 355	¥ 2,607

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- Definition

Available For Sale Debt Securities Accrued Interest.

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Fair value measurement with unobservable inputs reconciliation recurring basis asset conversion to equity investment.

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Fair value measurement with unobservable inputs reconciliation recurring basis asset reclassification.

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Fair value measurement with unobservable inputs reconciliation recurring basis asset share of losses in excess of equity method investment in ordinary shares.

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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.

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Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of gain (loss) recognized in other comprehensive income (OCI) from liability measured at fair value on recurring basis using unobservable input (level 3).

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