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Summary of Significant Accounting Policies - Additional Information (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2022 USD ($) | Jun. 30, 2020 USD ($) | Dec. 31, 2022 USD ($) a | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Cash and cash equivalents |  | $ 320,000,000.0 |  | $ 320,000,000.0 | $ 618,700,000 |
Cash equivalents |  | 228,400,000 |  | 228,400,000 | 532,900,000 |
Other-than-temporary impairment charges on available-for-sale securities |  |  |  | 0 | 0 |
Allowance for doubtful accounts |  | 10,000,000.0 |  | $ 10,000,000.0 | 4,900,000 |
Customer returns, allowances and earned discounts as a percentage of gross selling price |  |  |  | 1.00% |  |
Reserve for customer accounts receivable, percentage |  |  |  | 1.00% |  |
Reserve for customer deductions |  |  |  | $ 9,600,000 | 9,400,000 |
Interest capitalization, construction in progress |  |  |  | 7,300,000 | 3,800,000 | $ 3,700,000
Depreciation expense |  |  |  | 413,700,000 | 376,000,000.0 | 362,500,000
Incremental depreciation |  |  |  | $ 5,700,000 | $ 4,700,000 | 4,500,000
Intangible asset, useful life, in years |  |  |  | 8 years 1 month 6 days | 8 years 6 months |
Goodwill |  | 922,400,000 |  | $ 922,400,000 | $ 923,500,000 | 863,500,000
Goodwill and intangible asset impairment |  |  |  | 0 | 0 | 0
Goodwill impairment |  | 0 |  | 0 | 0 | 55,200,000
Deferred financing costs |  | 17,900,000 |  | $ 17,900,000 | 19,500,000 |
Area leased under timberland cutting rights (acres) | a |  |  |  | 580 |  |
Depletion expense |  |  |  | $ 2,400,000 | 2,000,000.0 | 3,100,000
Software amortization expense |  |  |  |  | 1,600,000 | $ 1,100,000
Cloud computing arrangements |  | 1,600,000 |  | 1,600,000 | 2,800,000 |
Total operating lease obligations |  | 306,800,000 |  | $ 306,800,000 | 246,400,000 |
Net Sales [Member] | Customer | Customer Concentration Risk [Member] |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  |  |  | 5.00% |  |
Other long-term assets |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Long-term lease costs capitalization (Cutting rights) |  | 22,400,000 |  | $ 22,400,000 | 21,000,000.0 |
Net capitalized software costs |  | 3,000,000.0 |  | 3,000,000.0 | 3,300,000 |
New Accounting Pronouncements [Member] | Long-term debt |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Deferred financing costs |  | 17,900,000 |  | $ 17,900,000 | $ 19,500,000 |
Paper Reporting Unit [Member] |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Goodwill impairment |  |  | $ 55,200,000 |  |  |
Customer Relationships |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Intangible asset, useful life, in years | [1] |  |  | 8 years 2 months 12 days | 8 years 6 months |
Trademarks and Trade Names |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Intangible asset, useful life, in years | [1] |  |  | 7 years 2 months 12 days | 8 years 4 months 24 days |
Minimum |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Term of senior credit facilities and notes, in years |  |  |  | 10 years |  |
Minimum | Customer Relationships |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Intangible asset, useful life, in years |  |  |  | 10 years |  |
Minimum | Trademarks and Trade Names |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Intangible asset, useful life, in years |  |  |  | 5 years |  |
Maximum |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Term of senior credit facilities and notes, in years |  |  |  | 30 years |  |
Maximum | Customer Relationships |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Intangible asset, useful life, in years |  |  |  | 40 years |  |
Maximum | Trademarks and Trade Names |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Intangible asset, useful life, in years |  |  |  | 20 years |  |
Foreign operations |  |  |  |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Cash and cash equivalents |  | $ 1,500,000 |  | $ 1,500,000 | $ 1,200,000 |
[1] | In connection with the December 2021 acquisition of Advance Packaging, the Company recorded intangible assets of $47.3 million for customer relationships, $2.8 million for trade names, and $0.1 million for other intangibles. During 2022, the Company made a $1.4 million net adjustment based on the final valuation received for the intangible assets. 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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