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Non-Covered Loan and Lease Finance Receivables and Allowance for Loan Losses - Summary of Activity Related to Troubled Debt Restructurings (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Performing TDRs [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Beginning balance | $ 66,955 | $ 50,392
New modifications | 41 | 10,245
Payoffs and payments, net | (602) | (4,195)
TDRs returned to accrual status |  | 1,149
TDRs placed on nonaccrual status |  |
Ending balance | 66,394 | 57,591
Nonperforming TDRs [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Beginning balance | 25,119 | 31,309
New modifications |  | 100
Payoffs and payments, net | (1,151) | (694)
TDRs returned to accrual status |  | (1,149)
TDRs placed on nonaccrual status |  |
Ending balance | $ 23,968 | $ 29,566

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- Definition The increase in performing troubled debt restructurings financing receivables, because of returns to accrual status. + References No definition available. + Details
Name: | cvbf_FinancingReceivableRecordedInvestmentTroubledDebtRestructuringsAccrualStatus
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The decrease in performing troubled debt restructurings financing receivables, because of the change in accrual status to nonaccrual. + References No definition available. + Details
Name: | cvbf_FinancingReceivableRecordedInvestmentTroubledDebtRestructuringsNonAccrualStatus
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Financing Receivables Impaired Troubled Debt Restructuring Additions + References No definition available. + Details
Name: | cvbf_FinancingReceivablesImpairedTroubledDebtRestructuringAdditions
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Financing Receivables Impaired Troubled Debt Restructuring Payments + References No definition available. + Details
Name: | cvbf_FinancingReceivablesImpairedTroubledDebtRestructuringPayments
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant