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Leases - Additional Information (Detail) - 12 months ended Dec. 31, 2019 ¥ in Millions, $ in Millions	CNY (¥)	USD ($)
Leases [Abstract]
Operating lease, weighted average remaining lease term	6 years 3 months 18 days	6 years 3 months 18 days
Operating lease, weighted average discount rate	4.45%	4.45%
Lease Term Of Contract	12 months	12 months
Operating lease cost	¥ 2,700	$ 382
Short-term lease cost	434	$ 62
Lease costs capitalized	¥ 0

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- Definition

Lease costs capitalized.

+ References

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- Definition

Operating and finance lease minimum term of contract.

+ References

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- References

No definition available.

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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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-Publisher FASB
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-SubTopic 20
-Section 55
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-Section 50
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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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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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-Publisher FASB
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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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