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Segment reporting - Restructuring Asset Impairment and Acquisition Related Costs (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | $ (348,583) | $ (725,765) | $ (324,296)
Operating segments | Consumer Packaging |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | (138,343) | (25,983) | (126,149)
Operating segments | Industrial Paper Packaging |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | (40,805) | (2,570) | (41,127)
Operating segments | All Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | (18,800) | (23,312) | (47,074)
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | $ (150,635) | $ (673,900) | $ (109,946)

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