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Segment reporting - Restructuring Asset Impairment and Acquisition Related Costs (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | $ (184,521) | $ (348,583) | $ (725,765)
Operating segments | Consumer Packaging |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | (56,237) | (138,343) | (25,983)
Operating segments | Industrial Paper Packaging |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | 17,064 | (40,805) | (2,570)
All Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | (24,486) | (18,800) | (23,312)
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | $ (120,862) | $ (150,635) | $ (673,900)

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