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Income Taxes - Significant Components of Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Millions | Jan. 02, 2021 | Dec. 28, 2019
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Deferred income tax assets: |  |
Accounts receivable and inventory valuation allowances | $ 3.5 | $ 5.7
Deferred compensation accruals | 4.5 | 4.0
Accrued pension expense | 33.4 | 25.3
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost | 9.1 | 14.5
Net operating loss and foreign tax credit carryforwards | 21.0 | 17.6
Book over tax depreciation and amortization | 0.4 | 0.5
Tenant lease expenses | 4.4 | 3.6
Environmental reserve | 24.9 | 15.4
Other | 9.1 | 5.1
Total gross deferred income tax assets | 110.3 | 91.7
Less valuation allowance | (22.3) | (17.6)
Net deferred income tax assets | 88.0 | 74.1
Deferred income tax liabilities: |  |
Intangible assets | (105.3) | (157.5)
Deferred Tax Liabilities, Deferred Expense | (10.7) | (8.6)
Deferred Tax Liabilities, Other | 4.3 | 4.1
Total deferred income tax liabilities | (120.3) | (170.2)
Total deferred income tax liabilities | $ (32.3) | $ (96.1)

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