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Acquisitions and Divestitures - Schedule of Preliminary Fair Value Of Assets Acquired And Measurement Period Adjustments (Details) - USD ($) $ in Thousands | 4 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Sep. 08, 2023 | Nov. 15, 2022 | Aug. 31, 2022
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] |  |  |  |  |  |
Goodwill | $ 1,810,654 | $ 1,810,654 | $ 1,675,311 |  |  |
Measurement Period Adjustments |  |  |  |  |  |
Goodwill |  | 15,083 |  |  |  |
RTS Packaging and Chattanooga Mill |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] |  |  |  |  |  |
Trade accounts receivable | 17,488 | 17,488 |  | $ 17,488 |  |
Other receivables | 0 | 0 |  | 0 |  |
Inventories | 19,262 | 19,262 |  | 20,209 |  |
Prepaid expenses | 2,131 | 2,131 |  | 2,720 |  |
Property, plant and equipment | 74,236 | 74,236 |  | 73,483 |  |
Right of use asset - operating leases | 34,894 | 34,894 |  | 34,604 |  |
Other intangible assets | 190,565 | 190,565 |  | 199,560 |  |
Goodwill | 107,566 | 107,566 |  | 92,657 |  |
Other assets | 2,053 | 2,053 |  | 2,465 |  |
Payable to suppliers | (7,320) | (7,320) |  | (7,320) |  |
Accrued expenses and other | (12,461) | (12,461) |  | (12,436) |  |
Accrued wages and other compensation | 2,731 | 2,731 |  | 2,731 |  |
Notes payable and current portion of long-term debt | (24) | (24) |  | (24) |  |
Noncurrent operating lease liabilities | (29,905) | (29,905) |  | (29,905) |  |
Pension and other postretirement benefits | 11,529 | 11,529 |  | 10,761 |  |
Long-term debt | (1,942) | (1,942) |  | (1,942) |  |
Deferred income taxes | (5,921) | (5,921) |  | (3,419) |  |
Other long-term liabilities | (1,815) | (1,815) |  | (3,293) |  |
Net assets acquired | 374,547 | 374,547 |  | $ 371,355 |  |
Measurement Period Adjustments |  |  |  |  |  |
Inventories | (947) |  |  |  |  |
Prepaid expenses | (589) |  |  |  |  |
Property, plant and equipment | 753 |  |  |  |  |
Right of use asset - operating leases | 290 |  |  |  |  |
Other intangible assets | (8,995) |  |  |  |  |
Goodwill | 14,909 |  |  |  |  |
Other assets | (412) |  |  |  |  |
Pension and other postretirement benefits | 768 |  |  |  |  |
Accrued expenses and other | (25) |  |  |  |  |
Deferred income taxes | (2,502) |  |  |  |  |
Other long-term liabilities | 1,478 |  |  |  |  |
Net assets acquired | 3,192 |  |  |  |  |
Inapel |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] |  |  |  |  |  |
Trade accounts receivable | 30,301 | 30,301 |  |  |  |
Other receivables | 6,088 | 6,088 |  |  |  |
Inventories | 9,269 | 9,269 |  |  |  |
Prepaid expenses | 1,430 | 1,430 |  |  |  |
Property, plant and equipment | 11,456 | 11,456 |  |  |  |
Right of use asset - operating leases | 217 | 217 |  |  |  |
Other intangible assets | 8,653 | 8,653 |  |  |  |
Goodwill | 15,704 | 15,704 |  |  |  |
Other assets | 793 | 793 |  |  |  |
Payable to suppliers | (15,899) | (15,899) |  |  |  |
Accrued expenses and other | (4,606) | (4,606) |  |  |  |
Accrued wages and other compensation | 1,127 | 1,127 |  |  |  |
Notes payable and current portion of long-term debt | 0 | 0 |  |  |  |
Noncurrent operating lease liabilities | (117) | (117) |  |  |  |
Deferred income taxes | (2,934) | (2,934) |  |  |  |
Net assets acquired | $ 59,228 | 59,228 |  |  |  |
Metalpack Packaging |  |  |  |  |  |
Measurement Period Adjustments |  |  |  |  |  |
Other receivables |  | 0 |  |  |  |
Inventories |  | (73) | $ 33,155 |  |  |
Property, plant and equipment |  | (247) |  |  |  |
Goodwill |  | 439 |  |  |  |
Accrued expenses and other |  | (119) |  |  |  |
Net assets acquired |  | 0 |  |  |  |
Skjern |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] |  |  |  |  |  |
Property, plant and equipment |  |  |  |  | $ 40,489 |
Other intangible assets |  |  |  |  | 39,330 |
Goodwill |  |  |  |  | $ 32,194 |
Measurement Period Adjustments |  |  |  |  |  |
Other receivables |  | 0 |  |  |  |
Inventories |  | 14 |  |  |  |
Property, plant and equipment |  | 4,921 |  |  |  |
Other intangible assets |  | (3,488) |  |  |  |
Goodwill |  | 3,135 |  |  |  |
Accrued expenses and other |  | (203) |  |  |  |
Taxes Payable |  | (3,416) |  |  |  |
Net assets acquired |  | 963 |  |  |  |
Nordeste |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  | $ 1,374
Other intangible assets |  |  |  |  |  | 3,031
Goodwill |  |  |  |  |  | $ 2,014
Measurement Period Adjustments |  |  |  |  |  |
Other receivables |  | (186) |  |  |  |
Inventories |  | (38) |  |  |  |
Property, plant and equipment |  | 494 |  |  |  |
Other intangible assets |  | 3,031 |  |  |  |
Goodwill |  | (3,400) |  |  |  |
Accrued expenses and other |  | 0 |  |  |  |
Taxes Payable |  | 0 |  |  |  |
Net assets acquired |  | $ (99) |  |  |  |

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