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Covered Assets and FDIC Loss Sharing Asset - Summary of Activity Related to FDIC Loss Sharing Asset (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Covered Assets And Fdic Loss Sharing Asset [Abstract] |  |
Balance, beginning of period | $ 18,489 | $ 59,453
FDIC share of additional losses, net of recoveries | (81) | 1,111
Cash received from FDIC, net of refund | (4) | (18,974)
Net amortization | (12,779) | (23,027)
Other reductions, net | (861) | (74)
Balance, end of period | $ 4,764 | $ 18,489

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

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- Definition FDIC Share of Additional Losses Increases Decreases Net + References No definition available. + Details
Name: | cvbf_FdicShareOfAdditionalLossesIncreasesDecreasesNet
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Net other reductions in FDIC loss sharing asset during the period. + References No definition available. + Details
Name: | cvbf_NetReductions
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Carrying amount of receivable assets originating from the indemnification agreement with the Federal Deposit Insurance Corporation (FDIC), in which the FDIC is to partially cover losses. + References No definition available. + Details
Name: | us-gaap_FDICIndemnificationAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Amount of decreases to the indemnification asset due to cash payments received relating to loss sharing agreements with the Federal Deposit Insurance Corporation (FDIC). + References No definition available. + Details
Name: | us-gaap_FDICIndemnificationAssetCashPaymentsReceived
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of decreases to the indemnification asset due to write offs of loans, net of recoveries, relating to loss sharing agreements with the Federal Deposit Insurance Corporation (FDIC). + References No definition available. + Details
Name: | us-gaap_FDICIndemnificationAssetNetWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration