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Income Taxes - Components of Net Deferred Tax Asset (Liability) (Detail) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Tax effect of temporary differences related to: |  |
Inventories |  | $ 1.9
Lease assets | $ 5.0 | 6.3
Accrued OPEB costs | 2.8 | 3.0
Accrued pension costs | 74.1 | 100.5
Accrued environmental liabilities | 28.5 | 31.0
Other deductible differences | 9.3 | 9.2
Investments in subsidiaries and affiliates | 7.3 | 2.7
Tax loss and tax credit carryforwards | 89.4 | 100.4
Valuation allowance | (18.4) | (17.5)
Adjusted gross deferred tax assets | 198.0 | 237.5
Netting of items by tax jurisdiction, assets | (111.2) | (117.3)
Net noncurrent deferred tax asset (liability) | 86.8 | 120.2
Tax effect of temporary differences related to: |  |
Inventories | (2.5) |
Property and equipment | (70.4) | (67.2)
Lease liabilities | (5.1) | (6.5)
Other taxable differences | (15.5) | (13.1)
Investments in subsidiaries and affiliates | (52.7) | (48.1)
Tax on unremitted earnings of non-U.S. subsidiaries | (11.2) | (12.0)
Adjusted gross deferred tax liabilities | (157.4) | (146.9)
Netting of items by tax jurisdiction, liabilities | 111.2 | 117.3
Net noncurrent deferred tax asset (liability) | $ (46.2) | $ (29.6)

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