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Income Taxes Income Tax Reconciliation (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Feb. 23, 2018 | Feb. 24, 2017 | Feb. 26, 2016
Valuation Allowance, Deferred Tax Assets, Reversal of Valuation Allowances, Amount |  | $ 23.9 |  |
U.S. federal statutory tax rate |  | 32.90% | 35.00% |
Tax expense at the U.S. federal statutory rate |  | $ 53.2 | $ 68.7 | $ 61.2
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount |  | 27.9 | 0.0 | 0.0
Foreign investment tax credits | [1] | (1.6) | 0.0 | (1.5)
Valuation allowance provisions and adjustments | [2] | 0.4 | (2.2) | (59.9)
COLI income | [3] | (3.4) | (3.3) | (0.7)
Effective Income Tax Rate Reconciliation, Tax Settlement, Foreign, Amount | [4] | 1.4 | (2.0) | (1.6)
State and local income taxes, net of federal |  | 6.7 | 6.5 | 6.7
Foreign operations, less applicable foreign tax credits | [5] | 4.0 | 9.3 | (0.1)
Research tax credit |  | (2.3) | (1.8) | (1.9)
Tax reserve adjustments |  | (0.2) | (5.3) | 0.0
Other |  | (5.3) | 1.8 | 2.3
Income tax expense |  | $ 80.8 | 71.7 | 4.5
FRANCE |  |  |  |
Valuation Allowance, Deferred Tax Assets, Reversal of Valuation Allowances, Amount |  |  |  | $ 56.0
income tax expense increase/decrease due to rate change |  |  | 7.9 |
UNITED KINGDOM |  |  |  |
income tax expense increase/decrease due to rate change |  |  | $ 1.5 |
[1] | Investment tax credits were granted by the Czech Republic for investments in qualifying manufacturing equipment.
[2] | The valuation allowance provisions were based on current year activity, and the valuation allowance adjustments were based on various factors, which are further detailed below.
[3] | The increase in the cash surrender value of COLI policies, net of normal insurance expenses, plus death benefit gains are non-taxable
[4] | The foreign operations, less applicable foreign tax credits, amounts include the rate differential between local statutory rates and the U.S. rate on foreign operations.
[5] | Reductions to the French corporate tax rate resulted in the revaluation of certain deferred tax assets of our French tax group, causing increases to income tax expense of $4.0 and $7.9 in 2018 and 2017, respectively. During 2017, reductions to the United Kingdom corporate tax rate increased tax expense by $1.5.

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