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Derivative Financial Instruments - Additional Information (Detail) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative assets and liabilities offset in balance sheet | $ 0 cvbf_DerivativeAssetsLiabilitiesNetAmountOffsetInBalanceSheet |
Total notional amount of the Company's swaps | $ 197,400,000 us-gaap_DerivativeAssetNotionalAmount | $ 221,500,000 us-gaap_DerivativeAssetNotionalAmount
Interest-rate swap agreements with customers [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Number of interest-rate swap agreements | 76 us-gaap_NumberOfInterestRateDerivativesHeld / us-gaap_DerivativeByNatureAxis = cvbf_InterestRateSwapAgreementsWithCustomersMember |

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Balance Type: | debit
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- Definition Nominal or face amount used to calculate payments on the derivative asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 + Details
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- Details
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- Definition Number of interest rate derivative instruments held by the entity at the reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959 + Details
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- Details
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Balance Type: |
Period Type: |