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Employee Benefit Plan Obligations Minimum Pension Liability (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Feb. 26, 2021 | Feb. 28, 2020 | Feb. 22, 2019
Retirement Benefits [Abstract] |  |  |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Foreign Currency Translation Adjustments,after Tax | $ (1.2) | $ 0.1 |
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, after Tax | (0.8) | 2.3 |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, before Tax | (0.1) | (0.1) |
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Minimum Pension Liability, before Tax (Deprecated 2017-01-31) | 11.7 | 7.4 | $ (9.5)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Minimum Pension Liability, Tax | 5.1 | 4.3 | 0.2
Defined Benefit Plan, Accumulated Other Comprehensive Income Minimum Pension Liability, after Tax (Deprecated 2017-01-31) | (6.6) | (3.1) | 9.7
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Benefit Cost, before Tax |  | (0.1) |
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Benefit Cost, Tax |  | 0.0 |
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Pension Cost, Net of Tax |  | (0.1) |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, Tax | 0.0 | 0.0 |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, after Tax | (0.1) | (0.1) |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax | (1.7) | (13.9) |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax | 0.3 | 3.4 |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax | 1.4 | (10.5) |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Gain (Loss), before Tax | (2.8) | (16.9) |
Pension and other post-retirement liability adjustments | (4.3) | (16.9) | (6.6)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Tax | 0.8 | 4.1 |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax | (3.5) | (12.8) | $ (5.0)
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax | 1.1 | 3.0 |
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Tax | 0.3 | 0.7 |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Gain (Loss), Tax | 0.6 | 4.1 |
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Gain (Loss), after Tax | (2.2) | (12.8) |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Foreign Currency Translation Adjustments, before Tax | (1.4) | 0.1 |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Foreign Currency Translation Adjustments, Tax | $ 0.2 | $ 0.0 |

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