Schedule of Assets (Held at End of Year) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| EBP 001 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| EBP, Schedule of Asset Held for Investment [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Assets (Held at End of Year) | Packaging Corporation of America Thrift Plan for Hourly Employees Schedule H, Line 4i — Schedule of Assets (Held at End of Year) EIN 36-4277050 Plan 001 December 31, 2025
* Denotes a party-in-interest to the Plan as defined by ERISA |
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