Regulatory Matters (Details Textual) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Regulatory Matters( Textual) [Abstract]
Trust-preferred securities included in Tier 1 Capital	$ 115.1	$ 115.1
Additional dividends without obtaining prior approval from bank regulators declared and paid	$ 80.4

Additional dividends without obtaining prior approval from bank regulators declared and paid.

No definition available.

Name:	cvbf_AdditionalDividendsWithoutObtainingPriorApprovalFromBankRegulatorsDeclaredAndPaid
Namespace Prefix:	cvbf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant