Asbestos-Related Liabilities - Narrative (Details) inactiveClaim in Thousands, $ in Millions	6 Months Ended
Jun. 30, 2024 USD ($) inactiveClaim	Dec. 31, 2023
Movement in Liability for Asbestos and Environmental Claims [Abstract]
Holding period for insulation operations (in days)	90 days
Liability for asbestos and environmental claims net claims paid	$ 5
Inactive claims (in claims) \| inactiveClaim	19
Accrued asbestos claims and related legal costs	$ 198
Unasserted claims	$ 133
Claims that do not specify damages (as a percent)		82.00%

The accrual for pending and future asbestos-related claims and related legal costs as of the balance sheet date.

No definition available.

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Namespace Prefix:	cck_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The accrual for Unasserted asbestos-related claims as of the balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	cck_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The number of inactive asbestos-related claims outstanding as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	cck_AsbestosRelatedClaimsInactiveNumber
Namespace Prefix:	cck_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of days following the stock acquisition of the insulation operations of a U.S. company before the company sold its insulation assets.

+ References

No definition available.

+ Details

Name:	cck_HoldingPeriodForInsulationOperations
Namespace Prefix:	cck_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage Of Claims Damages Not Specified

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No definition available.

+ Details

Name:	cck_PercentageOfClaimsDamagesNotSpecified
Namespace Prefix:	cck_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount, after effects of reinsurance, of payments to settle insured claims and pay costs incurred in the claims settlement process attributable to asbestos and environmental claims.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480081/944-40-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

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Period Type:	duration