Summary of Significant Accounting Policies - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) a	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Cash and cash equivalents	$ 685.0	$ 648.0
Cash equivalents	$ 614.7	589.1
Area leased under timberland cutting rights (acres) | a	530
Software amortization expense	$ 0.6	1.4	$ 1.6
Depletion expense	1.9	2.5	2.4
Goodwill	922.4	922.4
Other-than-temporary impairment charges on available-for-sale securities	0.0	0.0
Reserve for customer deductions	10.8	9.2
Allowance for doubtful accounts	9.8	3.9
Deferred financing costs	$ 18.0	19.9
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	$ 33.8	24.2
Interest capitalization, construction in progress	10.1	8.1	7.3
Depreciation expense	485.3	475.3	413.7
Incremental depreciation	$ 2.2	$ 14.4	5.7
Intangible asset, useful life, in years	6 years 7 months 6 days	7 years 3 months 18 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%
Other long-term assets
Net capitalized software costs	$ 1.0	1.9
Long-term lease costs capitalization (Cutting rights)	$ 23.1	22.7
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	6 years 7 months 6 days	7 years 4 months 24 days
Trademarks and Trade Names
Intangible asset, useful life, in years	6 years	6 years 6 months
Foreign operations
Cash and cash equivalents	$ 0.7	$ 2.1
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