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Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Income Tax Disclosure [Abstract] |  |
Deferred Tax Assets, Property, Plant and Equipment | $ 11.2 | $ 10.9
Deferred tax assets: |  |
Accrued expenses | 25.9 | 27.6
Net operating loss, capital loss, alternative minimum tax, research and development, and foreign tax credit carryforwards | 22.6 | 29.1
Definite lived intangibles | 1.2 | 1.4
Pension benefits | 32.9 | 33.5
Deferred Tax Assets, Other | 0.1 | 0.0
Gross deferred tax assets | 93.9 | 102.5
Valuation allowance | (7.7) | (5.9)
Total deferred tax assets | 86.2 | 96.6
Deferred tax liabilities: |  |
Depreciation and amortization | (10.5) | (6.6)
Expenses capitalized for book | (1.4) | (2.0)
Pension benefits | (14.5) | (14.7)
Intangibles liabilities | (51.1) | (52.6)
Deferred Tax Liabilities, Other | (0.2) | (0.1)
Gross deferred tax liabilities | (77.7) | (76.0)
Net deferred tax assets | $ 8.5 | $ 20.6

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