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Non-Covered Loan and Lease Finance Receivables and Allowance for Loan Losses - Summary of Activity Related to Non-Covered Loans Held-for-Sale (Detail) (Non-Covered Loans Held-for-Sale Activity [Member], USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013
Non-Covered Loans Held-for-Sale Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance, beginning of period | $ 3,667 |
Originations of mortgage loans |  |
Sales of mortgage loans |  |
Transfer of mortgage loans to held- for-investment |  |
Sales of other loans | (3,667) |
Transfers of other loans to held-for-sale |  |
Write-down of loans held-for-sale |  |
Balance, end of period |  |

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- Definition Cash outflow associated with the origination of mortgage loans. + References No definition available. + Details
Name: | cvbf_OriginationsOfMortgageLoans
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Sales of other loans. + References No definition available. + Details
Name: | cvbf_SalesOfOtherLoans
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Transfer of mortgage loans to held for investment. + References No definition available. + Details
Name: | cvbf_TransferOfMortgageLoansToHeldForInvestment
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Transfers of loans to held for sale. + References No definition available. + Details
Name: | cvbf_TransfersOfLoansToHeldForSale
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Write down of loans held for sale. + References No definition available. + Details
Name: | cvbf_WriteDownOfLoansHeldForSale
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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- Definition Amount of other loans held for sale. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(a)(7)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_LoansHeldForSaleOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The carrying amount of mortgage loans on real estate that were sold during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.6) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
Name: | us-gaap_MortgageLoansOnRealEstateCostOfMortgagesSold
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration