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Income Taxes - Components of Deferred Tax Assets (Liabilities) (Detail) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
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Income Tax Disclosure [Abstract] |  |
Restructuring reserves | $ 6.3 | $ 9.1
Accruals not yet deductible for tax purposes | 33.5 | 45.6
Net operating loss carry forwards | 248.8 | 250.1
Foreign, federal and state credits and investment tax allowances | 144.0 | 162.2
Employee benefit items | 169.3 | 166.5
Capitalized expenses | 76.8 | 54.9
Other |  | 37.5
Gross deferred tax assets | 678.7 | 725.9
Valuation allowance | (218.1) | (257.4)
Total deferred tax assets | 460.6 | 468.5
Depreciation and amortization | (33.3) | (30.3)
Unremitted foreign earnings | (19.8) | (44.1)
Intangibles | (243.9) | (264.5)
Other | (4.1) |
Total deferred tax liabilities | (301.1) | (338.9)
Net deferred tax assets | $ 159.5 | $ 129.6

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