Noncontrolling Interest, Ownership Percentage Acquired by Parent

No definition available.

Name:	gpk_NoncontrollingInterestOwnershipPercentageAcquiredbyParent
Namespace Prefix:	gpk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent reporting 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 12
-Sentence Column A

+ Details

Name:	invest_InvestmentLineItems
Namespace Prefix:	invest_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPercentageOfOwnershipAfterTransaction
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=gpk_GraphicFlexiblePackagingLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Nature of Business and Summary of Significant Accounting Policies - Principals of Consolidation (Details)	Jun. 30, 2014	Dec. 31, 2015	May. 30, 2014	May. 29, 2014	Dec. 08, 2011
Investment [Line Items]
Ownership percentage		100.00%
Parent's ownership percentage					87.00%
Ownership percentage acquired			13.00%
Rengo Riverwood Packaging, Ltd.
Investment [Line Items]
Ownership percentage		50.00%
Graphic Flexible Packaging, LLC
Investment [Line Items]
Parent's ownership percentage				87.00%
Ownership percentage acquired			13.00%
Ownership percentage sold	100.00%