Exit Activities - Schedule of Restructuring and Related Costs (Details) - Facility Closing - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Restructuring Cost and Reserve [Line Items] | ||||
| Total | $ 4 | $ 17 | $ 77 | $ 35 |
| Location, Statement of Income, Balance [Axis]: us-gaap:CostOfGoodsAndServicesSold | ||||
| Restructuring Cost and Reserve [Line Items] | ||||
| Accelerated Depreciation | 0 | 4 | 0 | 8 |
| Location, Statement of Income, Balance [Axis]: gpk:BusinessCombinationsBusinessExitShutdownAndOtherSpecialChargesNet | ||||
| Restructuring Cost and Reserve [Line Items] | ||||
| Asset Write-Offs and Start-Up Costs | (1) | 9 | 54 | 21 |
| Severance Costs and Other | $ 5 | $ 4 | $ 23 | $ 6 |
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of accelerated depreciation charged against earnings associated with exit from or disposal of business activities or restructuring plan. No definition available.
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- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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