Exit Activities - Schedule of Accrued Expenses Related to Restructuring (Details) $ in Millions |
6 Months Ended |
|---|---|
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Jun. 30, 2026
USD ($)
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| Restructuring Reserve [Roll Forward] | |
| Beginning balance | $ 21 |
| Costs Incurred | 20 |
| Payments | (25) |
| Adjustments | (6) |
| Ending balance | 10 |
| Facility Closing | |
| Restructuring Reserve [Roll Forward] | |
| Payments | (14) |
| Facility Closing | East Angus, Québec Paperboard Manufacturing Facility | |
| Restructuring Reserve [Roll Forward] | |
| Payments | (8) |
| Facility Closing | Multiple Packaging Facilities | |
| Restructuring Reserve [Roll Forward] | |
| Payments | $ (3) |
| X | ||||||||||
- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in the accrual for restructuring costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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