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Derivative and Other Financial Instruments - Fair Value Hedges and Contracts Not Designated as Hedges (Details) - Derivatives not designated as hedges - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative [Line Items]
Gain (loss) on derivative instruments, net, pretax	$ (7)	$ 12	$ (19)	$ 19
Net sales | Foreign exchange
Derivative [Line Items]
Gain (loss) on derivative instruments, net, pretax	0	0	(1)	0
Cost of products sold | Foreign exchange
Derivative [Line Items]
Gain (loss) on derivative instruments, net, pretax	0	(1)	0	(1)
Foreign exchange | Foreign exchange
Derivative [Line Items]
Gain (loss) on derivative instruments, net, pretax	(7)	13	(18)	19
cck_IncomeFromDiscontinuedOperations | Foreign exchange
Derivative [Line Items]
Gain (loss) on derivative instruments, net, pretax	$ 0	$ 0	$ 0	$ 1

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- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959

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