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Income Taxes Carryforwards (Details) - USD ($) $ in Millions | Feb. 22, 2019 | Feb. 23, 2018 | Feb. 24, 2017 | Feb. 26, 2016
--- | --- | --- | --- | ---
Operating Loss Carryforwards [Line Items] |  |  |  |
Liability for Uncertain Tax Positions presented net in underlying deferred tax asset | $ 2.0 | $ 2.2 |  |
Tax effected operating loss carryforwards | 46.1 | 55.8 |  |
Tax effected operating loss carryforwards, valuation allowances | (6.4) |  |  |
Deferred Tax Assets, Operating Loss Carryforwards net of federal tax benefit on State Losses | 46.5 |  |  |
Tax effected operating loss carryforwards, net | 40.1 |  |  |
Tax credit carryforwards | 38.7 | 31.8 |  |
Tax credit carryforward, valuation allowance | (1.5) |  |  |
Tax credit carryforwards, net | 37.2 |  |  |
Net operating loss and tax credit carryforwards | 77.3 |  |  |
Unrecognized Tax Benefits | 2.0 | $ 2.2 | $ 2.8 | $ 8.6
Within One Year [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Tax effected operating loss carryforwards | 0.1 |  |  |
Tax credit carryforwards | 0.0 |  |  |
In Five or More Years [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Tax effected operating loss carryforwards | 1.8 |  |  |
Tax credit carryforwards | 38.7 |  |  |
No Expiration Date [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Tax effected operating loss carryforwards | 44.6 |  |  |
Tax credit carryforwards | 0.0 |  |  |
Federal [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards, gross | 1.0 |  |  |
Tax effected operating loss carryforwards | 0.2 |  |  |
Tax effected operating loss carryforwards, valuation allowances | 0.0 |  |  |
Tax effected operating loss carryforwards, net | 0.2 |  |  |
Federal [Member] | Within One Year [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards, gross | 0.0 |  |  |
Tax effected operating loss carryforwards | 0.0 |  |  |
Federal [Member] | In Five or More Years [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards, gross | 1.0 |  |  |
Tax effected operating loss carryforwards | 0.2 |  |  |
Federal [Member] | No Expiration Date [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards, gross | 0.0 |  |  |
Tax effected operating loss carryforwards | 0.0 |  |  |
State [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards, gross | 14.1 |  |  |
Tax effected operating loss carryforwards, valuation allowances | (0.6) |  |  |
Deferred Tax Assets, Operating Loss Carryforwards net of federal tax benefit on State Losses | 1.6 |  |  |
Tax effected operating loss carryforwards, net | 1.0 |  |  |
State [Member] | Within One Year [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards, gross | 0.0 |  |  |
Tax effected operating loss carryforwards | 0.0 |  |  |
State [Member] | In Five or More Years [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards, gross | 14.1 |  |  |
Tax effected operating loss carryforwards | 1.6 |  |  |
State [Member] | No Expiration Date [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards, gross | 0.0 |  |  |
Tax effected operating loss carryforwards | 0.0 |  |  |
International [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards, gross | 185.6 |  |  |
Tax effected operating loss carryforwards | 44.7 |  |  |
Tax effected operating loss carryforwards, valuation allowances | (5.8) |  |  |
Tax effected operating loss carryforwards, net | 38.9 |  |  |
International [Member] | Within One Year [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards, gross | 0.4 |  |  |
Tax effected operating loss carryforwards | 0.1 |  |  |
International [Member] | In Five or More Years [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards, gross | 0.0 |  |  |
Tax effected operating loss carryforwards | 0.0 |  |  |
International [Member] | No Expiration Date [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carryforwards, gross | 185.2 |  |  |
Tax effected operating loss carryforwards | $ 44.6 |  |  |

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- Definition The cumulative amount after valuation allowances of future tax effects arising from the unused tax credit carryforward that cannot be utilized on the tax return during a year that may be carried forward to reduce taxable income or taxes payable in a future year; a tax credit carryforward is the amount by which tax credits available for utilization exceed statutory limitations. + References No definition available. + Details
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