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Covered Assets and FDIC Loss Sharing Asset - Summary of Activity Related to Other Real Estate Owned (Detail) (Covered [Member], USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Covered [Member] |  |
Summary of the Activity Related to Other Real Estate Owned [Line Items] |  |
Balance, beginning of period | $ 1,067 | $ 9,782
Additions | 1,492 | 1,738
Dispositions | (1,639) | (9,867)
Valuation adjustments | (416) | (586)
Balance, end of period | $ 504 | $ 1,067

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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
Name: | cvbf_OtherRealEstateAndForeclosedAssetsValuationAdjustments
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | cvbf_SummaryOfActivityRelatedToOtherRealEstateOwnedLineItems
Namespace Prefix: | cvbf_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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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