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Summary of significant accounting policies - Additional Information (Details) $ in Thousands |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Oct. 13, 2022 USD ($) | Dec. 31, 2022 USD ($) segment | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Jan. 26, 2023 USD ($) | Nov. 09, 2022
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Carrying value of equity investments |  | $ 59,171 | $ 54,356 |  |  |
Accounts payable for supply chain financing |  | 52,415 | 46,832 |  |  |
Research and development costs |  | $ 28,700 | $ 24,100 | $ 22,000 |  |
Percentage of LIFO inventory (percent) |  | 11.00% | 15.00% |  |  |
LIFO inventory amount |  | $ 51,342 | $ 22,900 |  |  |
Number of reportable segments (segment) | segment |  | 2 |  |  |  |
Sonoco Sustainability Solutions | Dispositions | Subsequent event |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Consideration from disposal, equity interest percentage received |  |  |  |  | 2.70% |
Consideration from disposal, equity interest, value received |  |  |  |  | $ 5,000 |
RTS Packaging, LLC |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage of controlling asset acquired (percent) |  | 65.00% |  |  |  | 65.00%
Minimum |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Intangible assets, useful life |  | 3 years |  |  |  |
Expected years of return on plan of investment |  | 12 years |  |  |  |
Minimum | Equipment |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Property plant and equipment, useful life |  | 3 years |  |  |  |
Minimum | Buildings |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Property plant and equipment, useful life |  | 15 years |  |  |  |
Maximum |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Intangible assets, useful life |  | 40 years |  |  |  |
Expected years of return on plan of investment |  | 15 years |  |  |  |
Maximum | Equipment |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Property plant and equipment, useful life |  | 11 years |  |  |  |
Maximum | Buildings |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Property plant and equipment, useful life |  | 40 years |  |  |  |
Net sales | Customer concentration | Customers that sponsor/promote multi-vendor supply chain finance arrangements | Multi-Vendor Supply Chain Finance Arrangement |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Customer concentrations (percent) |  | 13.00% | 10.00% |  |  |
Chilean tube |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage ownership of investments accounted for under the cost method (percent) |  | 19.50% |  |  |  |
Finland Small Recycling Business |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage ownership of investments accounted for under the cost method (percent) | 12.20% |  |  |  |  |
Cash proceeds | $ 3,830 |  |  |  |  |
Recognized a gain on the sale | $ 1,242 |  |  |  |  |
Sustainable Protective Packaging Solutions |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Percentage ownership of investments accounted for under the cost method (percent) |  | 18.00% |  |  |  |

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