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Organization, Consolidation and Presentation Of Financial Statements - Additional Information (Detail) $ in Millions, ¥ in Billions	12 Months Ended
	Dec. 31, 2019 CNY (¥)	Dec. 31, 2019 USD ($)
Variable Interest Entity [Line Items]
Exchange rate used for conversion of financial statements from RMB to US dollar	6.9618	6.9618
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Net assets of VIEs	¥ 14.5	$ 2,100
Beijing Perusal
Variable Interest Entity [Line Items]
Interest-free loans provided by a subsidiary of the entity to the shareholders of its variable interest entities	¥ 3.2	459
Equity pledge agreement expiration period	2 years
Other Vie
Variable Interest Entity [Line Items]
Equity pledge agreement expiration period	2 years
Baidu Netcom
Variable Interest Entity [Line Items]
Interest-free loans provided by a subsidiary of the entity to the shareholders of its variable interest entities	¥ 13.4	$ 1,900
Equity pledge agreement expiration period	2 years

X

- Definition

The period after which the equity pledge agreement between the shareholders of the entity's VIE and the entity's subsidiary will expire after expiration of the term or the fulfillment by the entity's VIE and its shareholders of their respective obligations under the exclusive technology consulting and service agreement and the loan agreement.

+ References

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- Definition

The amount of interest-free loans provided by a subsidiary of the entity to the shareholders of the variable interest entities controlled by the entity.

+ References

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- Definition

Amount of net assets (liabilities).

+ References

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- Definition

Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

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- Definition

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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