XML 55 R50.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Summary of Significant Accounting Policies - Additional Information (Detail) | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2014 USD ($) Unit Segment | Dec. 31, 2014 CNY | Dec. 31, 2013 CNY Unit | Dec. 31, 2012 CNY | Dec. 31, 2014 Online Payment Agencies CNY | Dec. 31, 2013 Online Payment Agencies CNY | Dec. 31, 2014 Cash and cash equivalents Maximum | Dec. 31, 2014 Short-term Investments Maximum | Dec. 31, 2014 Short-term Investments Minimum | Dec. 31, 2014 Other Long-term Investments Minimum | Dec. 31, 2014 Credit Concentration Risk Sales Revenue, Net Maximum | Dec. 31, 2014 Onshore China Credit Concentration Risk Financial Instruments | Dec. 31, 2014 Offshore China Credit Concentration Risk Financial Instruments | Dec. 31, 2014 Office building related facility, machinery and equipment | Dec. 31, 2014 Bank of China Credit Concentration Risk Financial Instruments | Dec. 31, 2014 China Merchants Bank Credit Concentration Risk Financial Instruments
Accounting Policies [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of operating segment | 1 us-gaap_NumberOfOperatingSegments | 1 us-gaap_NumberOfOperatingSegments |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity period used to classify cash and cash equivalent and investments |  |  |  |  |  |  | 3 months | 12 months | 3 months | 12 months |  |  |  |  |  |
Allowance for doubtful accounts of online payment agencies |  |  |  |  | 0 us-gaap_AllowanceForDoubtfulAccountsReceivable / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = bidu_OnlinePaymentAgenciesMember | 0 us-gaap_AllowanceForDoubtfulAccountsReceivable / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = bidu_OnlinePaymentAgenciesMember |  |  |  |  |  |  |  |  |  |
Fair value long-term notes payable | 3,515,403,000 us-gaap_NotesPayableFairValueDisclosure | 21,811,666,000 us-gaap_NotesPayableFairValueDisclosure | 14,797,937,000 us-gaap_NotesPayableFairValueDisclosure |  |  |  |  |  |  |  |  |  |  |  |  |
Internal use software development costs capitalized during the period | 0 us-gaap_CapitalizedComputerSoftwareAdditions | 0 us-gaap_CapitalizedComputerSoftwareAdditions | 2,680,000 us-gaap_CapitalizedComputerSoftwareAdditions | 38,130,000 us-gaap_CapitalizedComputerSoftwareAdditions |  |  |  |  |  |  |  |  |  |  |  |
Amortization expense for capitalized software costs | 4,550,000 us-gaap_CapitalizedComputerSoftwareAmortization | 28,240,000 us-gaap_CapitalizedComputerSoftwareAmortization | 31,650,000 us-gaap_CapitalizedComputerSoftwareAmortization | 19,720,000 us-gaap_CapitalizedComputerSoftwareAmortization |  |  |  |  |  |  |  |  |  |  |  |
Unamortized amount of capitalized internal use software developed costs (included in intangible assets, net) | 2,130,000 us-gaap_CapitalizedComputerSoftwareNet | 13,240,000 us-gaap_CapitalizedComputerSoftwareNet | 41,480,000 us-gaap_CapitalizedComputerSoftwareNet |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment, salvage value, percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.00%us-gaap_PropertyPlantAndEquipmentSalvageValuePercentage / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingImprovementsMember |  |
Number of reporting units the Company has | 3 us-gaap_NumberOfReportingUnits | 3 us-gaap_NumberOfReportingUnits | 3 us-gaap_NumberOfReportingUnits |  |  |  |  |  |  |  |  |  |  |  |  |
Sale tax and surcharges in cost of revenues | 579,850,000 us-gaap_ExciseAndSalesTaxes | 3,600,000,000 us-gaap_ExciseAndSalesTaxes | 2,330,000,000 us-gaap_ExciseAndSalesTaxes | 1,570,000,000 us-gaap_ExciseAndSalesTaxes |  |  |  |  |  |  |  |  |  |  |  |
Advertising expenses | 62,060,000 us-gaap_AdvertisingExpense | 385,060,000 us-gaap_AdvertisingExpense | 191,610,000 us-gaap_AdvertisingExpense | 326,830,000 us-gaap_AdvertisingExpense |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents, restricted cash and short-term investments | $ 9,450,000,000 bidu_CashCashEquivalentsRestrictedCashAndShortTermInvestments | 58,630,000,000 bidu_CashCashEquivalentsRestrictedCashAndShortTermInvestments |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk by percentage |  |  |  |  |  |  |  |  |  |  | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember / us-gaap_RangeAxis = us-gaap_MaximumMember | 86.37%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = bidu_FinancialInstrumentsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember / bidu_FinancialInstitutionByLocationAxis = bidu_OnshoreChinaMember | 13.63%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = bidu_FinancialInstrumentsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember / bidu_FinancialInstitutionByLocationAxis = bidu_OffshoreChinaMember |  | 17.54%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = bidu_FinancialInstrumentsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember / bidu_FinancialInstitutionByLegalEntityAxis = bidu_BankOfChinaMember | 31.26%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = bidu_FinancialInstrumentsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember / bidu_FinancialInstitutionByLegalEntityAxis = bidu_ChinaMerchantBankMember
Appreciation of US$ against RMB, as a percentage | 2.49%bidu_AppreciationOrDepreciationOfReportingCurrencyAgainstFunctionalCurrencyByPercentage | 2.49%bidu_AppreciationOrDepreciationOfReportingCurrencyAgainstFunctionalCurrencyByPercentage |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition Appreciation or depreciation of the reporting currency against the functional currency, as a percentage. + References No definition available. + Details
Name: | bidu_AppreciationOrDepreciationOfReportingCurrencyAgainstFunctionalCurrencyByPercentage
Namespace Prefix: | bidu_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. Restricted cash includes the current cash, cash equivalents and investments that are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes current cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. + References No definition available. + Details
Name: | bidu_CashCashEquivalentsRestrictedCashAndShortTermInvestments
Namespace Prefix: | bidu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Maturity period used to classify cash and cash equivalent and investments. + References No definition available. + Details
Name: | bidu_MaturityPeriodUsedToClassifyCashAndCashEquivalentAndInvestments
Namespace Prefix: | bidu_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
Name: | us-gaap_AdvertisingExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Additions made to capitalized computer software costs during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
Name: | us-gaap_CapitalizedComputerSoftwareAdditions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128487-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 + Details
Name: | us-gaap_CapitalizedComputerSoftwareAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128487-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 + Details
Name: | us-gaap_CapitalizedComputerSoftwareNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of excise and sales taxes included in sales and revenues, which are then deducted as a cost of sales. Includes excise taxes, which are applied to specific types of transactions or items (such as gasoline or alcohol); and sales, use and value added taxes, which are applied to a broad class of revenue-producing transactions involving a wide range of goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6408196&loc=d3e61097-111654 + Details
Name: | us-gaap_ExciseAndSalesTaxes
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair value portion of notes payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_NotesPayableFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Reporting Unit -URI http://asc.fasb.org/extlink&oid=6523643 + Details
Name: | us-gaap_NumberOfReportingUnits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Stated as a percentage, the estimated or actual value of the asset at the end of its useful life or when it is no longer serviceable (cannot be used for its original purpose) divided by its [historical] capitalized cost. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentSalvageValuePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant