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Summary of Significant Accounting Policies - Additional Information (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) a | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Cash and cash equivalents |  | $ 648.0 | $ 320.0 |
Cloud computing arrangements |  | 0.3 | 1.6 |
Cash equivalents |  | $ 589.1 | 228.4 |
Area leased under timberland cutting rights (acres) | a |  | 530 |  |
Software amortization expense |  | $ 1.4 | 1.6 | $ 1.6
Depletion expense |  | 2.5 | 2.4 | 2.0
Goodwill |  | 922.4 | 922.4 | 923.5
Other-than-temporary impairment charges on available-for-sale securities |  | 0.0 | 0.0 |
Reserve for customer deductions |  | 9.2 | 9.6 |
Allowance for doubtful accounts |  | 3.9 | 10.0 |
Deferred financing costs |  | $ 19.9 | 17.9 |
Customer returns, allowances and earned discounts as a percentage of gross selling price |  | 1.00% |  |
Reserve for customer accounts receivable, percentage |  | 1.00% |  |
Accounts payable related to property plant and equipment |  | $ 24.2 | 43.7 |
Interest capitalization, construction in progress |  | 8.1 | 7.3 | 3.8
Depreciation expense |  | 475.3 | 413.7 | 376.0
Incremental depreciation |  | $ 14.4 | $ 5.7 | 4.7
Intangible asset, useful life, in years |  | 7 years 3 months 18 days | 8 years 1 month 6 days |
Goodwill and intangible asset impairment |  | $ 0.0 | $ 0.0 | $ 0.0
Net Sales [Member] | Customer | Customer Concentration Risk [Member] |  |  |  |
Concentration risk, percentage |  | 2.00% | 5.00% |
Other long-term assets |  |  |  |
Net capitalized software costs |  | $ 1.9 | $ 3.0 |
Long-term lease costs capitalization (Cutting rights) |  | 22.7 | $ 22.4 |
New accounting pronouncements [Member] | Current Maturities of Long-Term Debt |  |  |  |
Deferred financing costs |  | 0.3 |  |
New accounting pronouncements [Member] | Long-term debt |  |  |  |
Deferred financing costs |  | $ 19.6 |  |
Customer Relationships |  |  |  |
Intangible asset, useful life, in years | [1] | 7 years 4 months 24 days | 8 years 2 months 12 days |
Trademarks and Trade Names |  |  |  |
Intangible asset, useful life, in years | [1] | 6 years 6 months | 7 years 2 months 12 days |
Foreign operations |  |  |  |
Cash and cash equivalents |  | $ 2.1 | $ 1.5 |
Minimum |  |  |  |
Term of senior credit facilities and notes, in years |  | 10 years |  |
Minimum | Customer Relationships |  |  |  |
Intangible asset, useful life, in years |  | 10 years |  |
Minimum | Trademarks and Trade Names |  |  |  |
Intangible asset, useful life, in years |  | 5 years |  |
Maximum |  |  |  |
Term of senior credit facilities and notes, in years |  | 30 years |  |
Maximum | Customer Relationships |  |  |  |
Intangible asset, useful life, in years |  | 40 years |  |
Maximum | Trademarks and Trade Names |  |  |  |
Intangible asset, useful life, in years |  | 20 years |  |
[1] | During 2022, the Company made a $1.4 million net adjustment based on the final valuation received for the intangible assets associated with the December 2021 acquisition of Advance Packaging. This adjustment resulted in a revision to the original allocations for customer relationships and trade names. As of December 31, 2022, the revised allocations for customer relationships and trade names were $42.2 million and $6.5 million, respectively.

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