Label	Element	Value
Cumulative Effect of New Accounting Principle in Period of Adoption	cpg_CumulativeEffectofNewAccountingPrincipleinPeriodofAdoption	$ (14,400,000)

Cumulative Effect of New Accounting Principle in Period of Adoption

No definition available.

Name:	cpg_CumulativeEffectofNewAccountingPrincipleinPeriodofAdoption
Namespace Prefix:	cpg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant