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Deposits - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deposits [Abstract]
Balance of accounts with more than $2500,000 balance	$ 101.5	$ 206.4

X

- Definition

Time deposits 250000 or more.

+ References

No definition available.

+ Details

Name:	cvbf_TimeDeposits250000OrMore
Namespace Prefix:	cvbf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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