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Segment Information - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023
Segment Reporting [Abstract]
Intercompany profit eliminated	$ 8	$ 9

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- Definition

Inter Company Profit Related To Non Reportable Segments

+ References

No definition available.

+ Details

Name:	cck_InterCompanyProfitRelatedToNonReportableSegments
Namespace Prefix:	cck_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- References

No definition available.

+ Details

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