Facilities include provisions for letters of credit

No definition available.

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

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02(22))
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+ Details

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Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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

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Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash paid for interest. Includes, but is not limited to, payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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+ Details

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

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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+ Details

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

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04.(a))
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Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585

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

- Details

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- Details

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- Details

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Period Type:

- Details

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Debt (Narrative) (Details)	1 Months Ended	12 Months Ended
Debt (Narrative) (Details)	Feb. 29, 2016 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 USD ($)	Apr. 30, 2017 EUR (€)	Apr. 30, 2017 USD ($)	Sep. 30, 2016 EUR (€)	Sep. 30, 2016 USD ($)
Debt Instrument [Line Items]
Long-term debt, fair value			$ 5,043,000,000			$ 5,562,000,000
Borrowings outstanding			4,878,000,000			5,281,000,000
Aggregate maturities of long term debt excluding unamortized discounts, year one						64,000,000
Aggregate maturities of long term debt excluding unamortized discounts, year two						71,000,000
Aggregate maturities of long term debt excluding unamortized discounts, year three						77,000,000
Aggregate maturities of long term debt excluding unamortized discounts, year four						63,000,000
Aggregate maturities of long term debt excluding unamortized discounts, year five						1,789,000,000
Cash payments for interest		$ 225,000,000	217,000,000	$ 249,000,000
Proceeds from long-term debt		1,054,000,000	1,380,000,000	1,435,000,000
Debt issued			4,931,000,000			5,328,000,000
Loss from early extinguishments of debt		$ 7,000,000	37,000,000	$ 9,000,000
€600 at 2.625% due 2024
Debt Instrument [Line Items]
Loss from early extinguishments of debt			7,000,000
U.S. dollar at 4.25% due 2026
Debt Instrument [Line Items]
Loss from early extinguishments of debt			3,000,000
Term loan facilities \| Euro at EURIBOR plus 1.50% due 2022
Debt Instrument [Line Items]
Borrowings outstanding						324,000,000
Basis spread on variable rate (as a percent)		1.50%
Debt instrument, face amount \| €					€ 270,000,000
Debt issued						324,000,000
Term loan facilities \| U.S. dollar at LIBOR Plus 1.75% Due 2022
Debt Instrument [Line Items]
Debt instrument, face amount								$ 750,000,000
Term loan facilities \| LIBOR plus 1.75% due 2022
Debt Instrument [Line Items]
Debt instrument, face amount \| €							€ 275,000,000
Term loan facilities \| U.S. dollar at LIBOR plus 1.50% due 2022
Debt Instrument [Line Items]
Borrowings outstanding						735,000,000
Basis spread on variable rate (as a percent)		1.50%
Proceeds from long-term debt	$ 300,000,000
Debt issued						741,000,000
Revolving credit facilities
Debt Instrument [Line Items]
Borrowings outstanding			0			122,000,000
Debt issued			0			122,000,000
Senior notes and debentures: \| U.S. dollar 6.25% due 2021
Debt Instrument [Line Items]
Debt issued	$ 700,000,000
Debt instrument stated percentage	6.25%
Loss from early extinguishments of debt			27,000,000
Senior notes and debentures: \| €600 at 2.625% due 2024
Debt Instrument [Line Items]
Borrowings outstanding			623,000,000			713,000,000
Debt instrument, face amount \| €					€ 600,000,000				€ 600,000,000
Debt issued			631,000,000			$ 720,000,000
Debt instrument stated percentage					2.625%	2.625%			2.625%	2.625%
Senior notes and debentures: \| €600 at 3.375% due 2025
Debt Instrument [Line Items]
Borrowings outstanding			622,000,000			$ 711,000,000
Debt instrument, face amount \| €					€ 600,000,000
Debt issued			631,000,000			$ 720,000,000
Debt instrument stated percentage					3.375%	3.375%
Senior notes and debentures: \| U.S. dollar at 4.25% due 2026
Debt Instrument [Line Items]
Borrowings outstanding			393,000,000			$ 393,000,000
Debt issued			$ 400,000,000			$ 400,000,000				$ 400,000,000
Debt instrument stated percentage					4.25%	4.25%			4.25%	4.25%
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, available borrowing capacity						$ 1,236,000,000
Line of credit facility, maximum borrowing capacity						1,400,000,000
Outstanding letters of credit						42,000,000
Basis spread on variable rate (as a percent)		1.25%
Revolving Credit Facility \| Revolving credit facilities
Debt Instrument [Line Items]
Debt instrument, face amount								$ 1,400,000,000
Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Provisions for letters of credit						$ 210,000,000
Basis spread on variable rate (as a percent)		1.75%