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Other Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Related Party Transactions [Abstract]
Prepaid FDIC insurance assessments	$ 0	$ 8.4

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- Definition

Prepaid FDIC Insurance Assessments.

+ References

No definition available.

+ Details

Name:	cvbf_PrepaidFdicInsuranceAssessments
Namespace Prefix:	cvbf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Details

Name:	us-gaap_RelatedPartyTransactionsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration