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Other Real Estate Owned - Summary of Activity Related to Total OREO (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract] |  |
Balance, beginning of period | $ 6,979 us-gaap_OtherRealEstateAndForeclosedAssets | $ 15,899 us-gaap_OtherRealEstateAndForeclosedAssets
Additions | 3,591 cvbf_OtherRealEstateAndForeclosedAssetsAdditions | 1,492 cvbf_OtherRealEstateAndForeclosedAssetsAdditions
Dispositions | (4,868)cvbf_OtherRealEstateAndForeclosedAssetsSales | (9,923)cvbf_OtherRealEstateAndForeclosedAssetsSales
Valuation adjustments | (65)cvbf_OtherRealEstateAndForeclosedAssetsValuationAdjustments | (489)cvbf_OtherRealEstateAndForeclosedAssetsValuationAdjustments
Balance, end of period | $ 5,637 us-gaap_OtherRealEstateAndForeclosedAssets | $ 6,979 us-gaap_OtherRealEstateAndForeclosedAssets

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- Definition The acquisition of other real estate owned through foreclosure, representing an increase the balance of other real estate owned during the period. + References No definition available. + Details
Name: | cvbf_OtherRealEstateAndForeclosedAssetsAdditions
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The carrying amount of other real estate owned sold during the period. + References No definition available. + Details
Name: | cvbf_OtherRealEstateAndForeclosedAssetsSales
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Changes in valuation adjustments associated with other real estate owned occurring during the period. + References No definition available. + Details
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Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
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- Definition Carrying amount as of the balance sheet date of other real estate and foreclosed assets. Other real estate may include real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. Foreclosed assets include all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(4)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_OtherRealEstateAndForeclosedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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