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Goodwill and Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets and Goodwill [Table Text Block]
Changes in the carrying amounts of goodwill and intangible assets by reportable segment were as follows:
(In millions)Consumer ProductsPulp and PaperboardTotal
IntangiblesGoodwillIntangibles
Balance as of December 31, 2018
$4.6 $35.1 $19.5 $59.2 
  Amortization(4.3)— (2.9)(7.2)
Balance as of December 31, 2019
0.3 35.1 16.6 52.0 
  Amortization(0.3)— (2.9)(3.2)
Balance as of December 31, 2020
$— $35.1 $13.7 $48.8 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
As of December 31, 2020, estimated future amortization expense related to intangible assets is as follows (in millions):
Years ending December 31,Amount
2021$2.9 
20222.2 
20232.1 
20242.1 
20252.1 
Thereafter2.1 
Total$13.7