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Other Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Related Party Transactions [Abstract] |  |
Prepaid FDIC insurance assessments | $ 0 | $ 8.4

X
- Definition Prepaid FDIC Insurance Assessments. + References No definition available. + Details
Name: | cvbf_PrepaidFdicInsuranceAssessments
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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