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Income Taxes - Details of Deferred Tax Assets and Liabilities (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Deferred tax assets:    
Stock compensation $ 5.2 $ 5.3
Net operating loss carry forwards 12.0 9.8
Other intangible assets 11.1 10.6
Accretion expense 3.2 3.2
Restructuring provision 2.0 1.4
Employee related liabilities 4.1 0.2
Foreign tax credits 1.9 2.0
Operating lease liabilities 10.6 9.2
Other 7.4 6.7
Subtotal 57.5 48.4
Less valuation allowance (0.8) (1.1)
Total net deferred tax assets 56.7 47.3
Deferred tax liabilities:    
Property, plant and equipment (23.6) (21.3)
Intangible assets including goodwill (29.8) (28.3)
Pension asset (38.2) (20.5)
Customer relationships (4.5) (4.4)
Unremitted overseas earnings (1.9) (2.0)
Right-of-use assets (10.6) (9.2)
Other (2.5) (0.9)
Total deferred tax liabilities (111.1) (86.6)
Net deferred tax liability (54.4) (39.3)
Deferred tax assets 6.4 7.6
Deferred tax liabilities (60.8) (46.9)
Net deferred tax liability $ (54.4) $ (39.3)