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Employee Benefit Plan Obligations Minimum Pension Liability (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Feb. 23, 2018 | Feb. 24, 2017 | Feb. 26, 2016
Retirement Benefits [Abstract] |  |  |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Foreign Currency Translation Adjustments,after Tax | $ (1.0) | $ 1.0 |
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, after Tax | (1.8) | (0.6) |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized as part of the settlement, before Tax | 7.1 |  |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized as part of the settlement, Tax | (2.4) |  |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized as part of the settlement, after Tax | 4.7 |  |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, before Tax | (7.1) | (8.7) |
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Minimum Pension Liability, before Tax (Deprecated 2017-01-31) | 16.1 | 15.0 | $ 10.3
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Minimum Pension Liability, Tax | (1.4) | (2.0) | 0.4
Defined Benefit Plan, Accumulated Other Comprehensive Income Minimum Pension Liability, after Tax (Deprecated 2017-01-31) | 14.7 | 13.0 | 10.7
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Benefit Cost, before Tax | (7.1) | (8.7) |
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Benefit Cost, Tax | 2.9 | 3.4 |
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Pension Cost, Net of Tax | (4.2) | (5.3) |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, Tax | 2.9 | 3.4 |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, after Tax | (4.2) | (5.3) |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax | 5.5 | 11.4 |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax | (1.5) | (5.4) |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax | (4.0) | 6.0 |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Gain (Loss), before Tax | 9.4 | 12.2 |
Pension and other post-retirement liability adjustments | 1.1 | 4.7 | 2.6
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Tax | 0.6 | (2.4) |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax | (1.7) | (2.3) | $ (2.2)
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax | 3.2 | (0.8) |
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Tax | 1.4 | (0.2) |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Gain (Loss), Tax | (2.5) | (5.6) |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Gain (Loss), after Tax | 6.9 | 6.6 |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Foreign Currency Translation Adjustments, before Tax | (1.2) | 1.2 |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Foreign Currency Translation Adjustments, Tax | $ 0.2 | $ (0.2) |

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