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Segment reporting - Restructuring Asset Impairment and Acquisition Related Costs (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | $ 676,346 | $ 271,397 | $ 144,626
Operating segments | Consumer Packaging |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | 4,197 | 100,166 | 40,831
Operating segments | Industrial Paper Packaging |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | (3,056) | 33,450 | 5,491
Operating segments | All Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | 5,343 | 27,835 | 1,828
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring, asset impairment and acquisition-related costs | $ 669,862 | $ 109,946 | $ 96,476

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