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Receivables (Narrative) (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Receivables [Abstract] |  |  |  |
Accounts receivable securitization facilities | $ 200 |  |  |
Deferred purchase price |  |  | $ 106 |
Expenses related to securitization and factoring facilities |  | $ 21 | $ 15 | $ 13
Accounts receivable securitization facilities, maximum available |  | $ 375 |  |
Proceeds from accounts receivable securitization | $ 106 |  |  |

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- Definition The amount of the Company's committed securitization facilities. + References No definition available. + Details
Name: | cck_AccountsReceivableSecuritizationFacilities
Namespace Prefix: | cck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Accounts Receivable Securitization Facilities, Maximum Available + References No definition available. + Details
Name: | cck_AccountsReceivableSecuritizationFacilitiesMaximumAvailable
Namespace Prefix: | cck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Deferred Purchase Price Receivable + References No definition available. + Details
Name: | cck_DeferredPurchasePriceReceivable
Namespace Prefix: | cck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Interest Expense Securitization and Factoring Facilities. + References No definition available. + Details
Name: | cck_InterestExpenseSecuritizationAndFactoringFacilities
Namespace Prefix: | cck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Proceeds from securitizations of receivables treated as collateralized borrowings, which are classified as financing transactions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromAccountsReceivableSecuritization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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