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Covered Assets and FDIC Loss Sharing Asset - Schedule Activity of Loans Held-for-Sale (Detail) (Covered Loans Held-for-Sale Activity [Member], USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Covered Loans Held-for-Sale Activity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance, beginning of period |  | $ 5,664
Sales of other loans |  | (3,745)
Write-down of loans held for sale |  | (1,219)
Payment on other loans |  | (700)
Balance, end of period |  |

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- Definition Amount of loans covered under FDIC loss sharing agreement that are classified as held for sale. + References No definition available. + Details
Name: | cvbf_CoveredLoansHeldForSale
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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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

X
- 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

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

X
- Definition The cash outflow for the payment of other borrowing not otherwise defined in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
Name: | us-gaap_RepaymentsOfOtherDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration