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Related party transactions and balances (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Related party transactions and balances (Details) [Line Items]
Consulting fees	$ 103,514	$ 61,899
Granted options shares (in Shares)	2,566,667
Fair value amount		150,000
Platoro West Inc. [Member]
Related party transactions and balances (Details) [Line Items]
Fair value amount	$ 6,496,785	$ 384,881

X

- Definition

The amount of consulting fees.

+ References

No definition available.

+ Details

Name:	cve_ConsultingFees
Namespace Prefix:	cve_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Fair Value Amount.

+ References

No definition available.

+ Details

Name:	cve_FairValueAmount
Namespace Prefix:	cve_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Granted options shares.

+ References

No definition available.

+ Details

Name:	cve_GrantedOptionsShares
Namespace Prefix:	cve_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	cve_RelatedpartytransactionsandbalancesDetailsLineItems
Namespace Prefix:	cve_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=cve_PlatoroWestIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: