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Income Taxes - Significant Components of Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Millions | Dec. 28, 2019 | Dec. 29, 2018
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Deferred income tax assets: |  |
Accounts receivable and inventory valuation allowances | $ 5.7 | $ 4.9
Deferred compensation accruals | 4.0 | 6.9
Accrued pension expense | 25.3 | 21.6
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost | 14.5 | 16.9
Net operating loss and foreign tax credit carryforwards | 17.6 | 19.2
Book over tax depreciation and amortization | 0.5 | 0.8
Tenant lease expenses | 3.6 | 4.1
Environmental reserve | 15.4 | 5.0
Other | 5.1 | 5.8
Total gross deferred income tax assets | 91.7 | 85.2
Less valuation allowance | (17.6) | (17.8)
Net deferred income tax assets | 74.1 | 67.4
Deferred income tax liabilities: |  |
Intangible assets | (157.5) | (157.3)
Deferred Tax Liabilities, Deferred Expense | (8.6) | (8.3)
Deferred Tax Liabilities, Other | 4.1 | 6.6
Total deferred income tax liabilities | (170.2) | (172.2)
Total deferred income tax liabilities | $ (96.1) | $ (104.8)

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