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Fair Value Information - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Percentage of cost to sale of non-covered impaired loans and non-covered other real estate owned	8.00%
Minimum [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Term of interest rate swap contracts by the counterparty, years	3 years
Maximum [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Term of interest rate swap contracts by the counterparty, years	30 years

X

- Definition

Percentage of cost to sale of non-covered impaired loans and non-covered other real estate owned.

+ References

No definition available.

+ Details

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Namespace Prefix:	cvbf_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Term of interest rate swap contracts by counter party.

+ References

No definition available.

+ Details

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Namespace Prefix:	cvbf_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

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