Receivables (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
Expenses related to securitization and factoring facilities	$ 13	$ 13	$ 13

Interest Expense Securitization and Factoring Facilities.

No definition available.

Name:	cck_InterestExpenseSecuritizationAndFactoringFacilities
Namespace Prefix:	cck_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration