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Organization, Consolidation and Presentation of Financial Statements - Additional Information (Detail) ¥ in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 USD ($) | Dec. 31, 2017 CNY (¥) | Dec. 29, 2017
Variable Interest Entity [Line Items] |  |  |
Net assets of VIEs | $ 780.0 | ¥ 5,100 |
Creditors of the VIEs'third-party liabilities with no recourse to the general credit of the primary beneficiaries | No |  |
Exchange rate used for conversion of financial statements from RMB to US dollar |  |  | 6.5063
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 | $ 491.0 | 3,200 |
Equity pledge agreement expiration period | 2 years |  |
Baidu Pay |  |  |
Variable Interest Entity [Line Items] |  |  |
Interest-free loans provided by a subsidiary of the entity to the shareholders of its variable interest entities | $ 33.0 | 217 |
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 | $ 334.0 | ¥ 2,200 |
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 No definition available. + Details
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- Definition Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521 + Details
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- Definition The net carrying amount of the consolidated Variable Interest Entity's assets and liabilities included in the reporting entity's statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=77990344&loc=d3e5710-111685 + Details
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- Definition A statement by the reporting entity that the creditors (or beneficial interest holders) of the consolidated Variable Interest Entity (VIE) have no recourse to the general credit of the primary beneficiary. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=77990344&loc=d3e5710-111685 + Details
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- Details
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- Details
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