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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.