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Concentrations of Risk - Additional Information (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) Employee | Dec. 31, 2020 USD ($)
Concentration Risk [Line Items] |  |
Accounts receivable, net, current | $ 1,071.0 | $ 832.4
Number of employees of PCA | Employee | 15,200 |
Percentage of hourly employees represented by unions | 63.00% |
Office Depot | Credit Concentration Risk |  |
Concentration Risk [Line Items] |  |
Accounts receivable, net, current | $ 49.8 | $ 39.6
Workforce Subject to Collective Bargaining Arrangements | Customer Concentration Risk | Labor |  |
Concentration Risk [Line Items] |  |
Concentration risk, percentage | 45.00% |
Workforce Subject to Collective Bargaining Arrangements Expiring within One Year | Customer Concentration Risk | Labor |  |
Concentration Risk [Line Items] |  |
Concentration risk, percentage | 2.00% |
Total Company Sales Revenue | Office Depot | Customer Concentration Risk |  |
Concentration Risk [Line Items] |  |
Concentration risk, percentage | 4.00% | 5.00%
Paper Segment Sales Revenue | Office Depot | Customer Concentration Risk | Paper |  |
Concentration Risk [Line Items] |  |
Concentration risk, percentage | 51.00% | 45.00%
Total Company Receivables | Office Depot | Customer Concentration Risk |  |
Concentration Risk [Line Items] |  |
Concentration risk, percentage | 4.00% | 5.00%

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