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Income Taxes (Summary Of Temporary Differences That Give Rise To Deferred Income Tax Assets And Liabilities) (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Deferred income tax assets (liabilities): |  |
Inventory costing and valuation methods | $ 5.3 | $ 4.3
Allowance for credit losses | 3.1 | 2.7
Insurance reserves | 9.1 | 9.1
Customer promotions | 2.4 | 1.9
Stock-based compensation | 3.3 | 3.9
Operating lease liabilities | 62.1 | 62.5
Federal and state benefit of uncertain tax positions | 0.8 | 0.8
Foreign net operating loss and credit carryforwards | 1.9 | 3.2
Foreign valuation allowances | (2.2) | (2.8)
Other, net | (0.3) | (0.0)
Total deferred income tax assets | 85.5 | 85.6
Property and equipment | (117.6) | (114.7)
Operating lease ROU assets | (61.4) | (61.7)
Total deferred income tax liabilities | (179.0) | (176.4)
Deferred income tax liabilities | $ (93.5) | $ (90.8)

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