Subsequent Events (Details)	9 Months Ended
Sep. 30, 2020 USD ($)
Subsequent Events [Abstract]
Interest earned funds held in trust account	$ 1,000,000

Amount of interest income earned on funds held in trust account.

No definition available.

Name:	cpaau_InterestEarnedOnFundsHeldInTrustAccount
Namespace Prefix:	cpaau_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration