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Long-Term Time Deposits and Held-to-Maturity Investments - Summary of Estimated Amortized Cost of Long Term Time Deposits and Held-to-Maturity Investments (Detail) - Long Term Investments - Corporate Debt Securities ¥ in Millions, $ in Millions	Dec. 31, 2023 CNY (¥)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 CNY (¥)
Due in 1 year through 2 years	¥ 22,303	$ 3,141	¥ 11,089
Due in 2 years through 3 years	2,063	291	12,240
Due in 3 years through 5 years	300	42	300
Total	¥ 24,666	$ 3,474	¥ 23,629

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- Definition

Held to maturity securities debt maturities after one year through two years amortized cost basis.

+ References

No definition available.

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- Definition

Held to maturity securities debt maturities after three years through five years amortized cost basis.

+ References

No definition available.

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- Definition

Held to maturity securities debt maturities after two years through three years amortized cost basis.

+ References

No definition available.

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- Definition

Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-5

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 320
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480832/942-320-50-3

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