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Leases - Additional Information (Detail) ¥ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023 CNY (¥)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 CNY (¥)	Dec. 31, 2021 CNY (¥)
Leases [Abstract]
Operating lease, weighted average remaining lease term	13 years 7 months 6 days	13 years 7 months 6 days	14 years 9 months 18 days
Operating lease, weighted average discount rate	4.07%	4.07%	4.30%
Short-term lease cost	¥ 547	$ 77	¥ 424	¥ 475
Lease Term Of Contract	12 months	12 months
Operating lease cost	¥ 3,500	$ 498	¥ 3,500	¥ 3,200

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Operating and finance lease minimum term of contract.

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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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- Definition

Weighted average discount rate for operating lease calculated at point in time.

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- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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-Topic 842
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- Definition

Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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