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Income Taxes - Components of Net Deferred Income Taxes (Detail) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Income Tax Disclosure [Abstract] |  |
Lease assets (liabilities) | $ 5.3 | $ 5.0
Accrued OPEB costs, Assets | 1.7 | 2.3
Accrued pension costs, Assets | 21.6 | 73.6
Other accrued liabilities and deductible differences, Assets | 15.3 | 12.1
Tax loss and tax credit carryforwards, Assets | 70.7 | 78.1
Valuation allowance, Assets | (3.8) | (7.4)
Adjusted gross deferred tax assets | 110.8 | 163.7
Netting by tax jurisdiction, Assets | (58.8) | (56.9)
Net noncurrent deferred tax asset | 52.0 | 106.8
Inventories, Liabilities | (5.5) | (2.9)
Property and equipment, Liabilities | (59.1) | (62.5)
Lease liabilities | (5.4) | (5.1)
Other taxable differences, Liabilities | (3.9) | (3.3)
Tax on unremitted earnings of non-U.S. subsidiaries, Liabilities | (11.3) | (11.2)
Adjusted gross deferred tax assets (liabilities) | (85.2) | (85.0)
Netting by tax jurisdiction, Liabilities | 58.8 | 56.9
Net noncurrent deferred tax asset (liability) | $ (26.4) | $ (28.1)

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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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