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Summary of significant accounting policies (Tables) | 12 Months Ended
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Dec. 31, 2021
Accounting Policies [Abstract] |
Affiliated companies over which the Company exercised significant influence | Affiliated companies over which the Company exercised a significant influence at December 31, 2021, included:
Entity | Ownership Interest Percentage at December 31, 2021
RTS Packaging JVCO | 35.0 | %
Cascades Conversion, Inc. | 50.0 | %
Cascades Sonoco, Inc. | 50.0 | %
Showa Products Company Ltd. | 22.2 | %
Papertech Energía, S.L. | 25.0 | %
Weidenhammer New Packaging, LLC | 40.0 | %

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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