XML 63 R52.htm IDEA: XBRL DOCUMENT v3.21.2

Asbestos-Related Liabilities - Summary of Percentage of Outstanding Claims Related to Claimants Alleging Serious Diseases (Details)	Dec. 31, 2020	Dec. 31, 2019
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Claims alleging serious diseases	23.00%	22.00%
Pre-1964 claims in states without asbestos legislation
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Claims alleging serious diseases	41.00%	41.00%

X

- Definition

Percentage of asbestos-related claims alleging serious diseases outstanding as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	cck_PercentageOfAsbestosRelatedClaimsAllegingSeriousDiseases
Namespace Prefix:	cck_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis=cck_TotalClaimsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: