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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Feb. 26, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The following table summarizes the changes in accumulated balances of other comprehensive income (loss) during the years ended February 26, 2021 and February 28, 2020:
| Unrealized gain (loss) on investments | Pension and other post-retirement liability adjustments | Derivative adjustments |  | Foreign currency translation adjustments | Total
Balance as of February 22, 2019 | $ | — |  |  | $ | 9.7 |  |  | $ | (9.6) |  |  |  |  | $ | (47.4) |  |  | $ | (47.3) |  |
Other comprehensive income (loss) before reclassifications | 0.4 |  |  | (10.4) |  |  | — |  |  |  |  | (10.8) |  |  | (20.8) |  |
Amounts reclassified from accumulated other comprehensive income (loss) | (0.5) |  |  | (2.4) |  |  | 1.0 |  |  |  |  | 0.7 |  |  | (1.2) |  |
Net other comprehensive income (loss) during period | (0.1) |  |  | (12.8) |  |  | 1.0 |  |  |  |  | (10.1) |  |  | (22.0) |  |
Balance as of February 28, 2020 | $ | (0.1) |  |  | $ | (3.1) |  |  | $ | (8.6) |  |  |  |  | $ | (57.5) |  |  | $ | (69.3) |  |
Other comprehensive income (loss) before reclassifications | 0.4 |  |  | (2.7) |  |  | — |  |  |  |  | 31.0 |  |  | 28.7 |  |
Amounts reclassified from accumulated other comprehensive income (loss) | — |  |  | (0.8) |  |  | 1.0 |  |  |  |  | 0.4 |  |  | 0.6 |  |
Net other comprehensive income (loss) during period | 0.4 |  |  | (3.5) |  |  | 1.0 |  |  |  |  | 31.4 |  |  | 29.3 |  |
Balance as of February 26, 2021 | $ | 0.3 |  |  | $ | (6.6) |  |  | $ | (7.6) |  |  |  |  | $ | (26.1) |  |  | $ | (40.0) |  |
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] | The following table provides details about reclassifications out of accumulated other comprehensive income (loss) for the years ended February 26, 2021 and February 28, 2020:
Detail of Accumulated Other Comprehensive Income (Loss) Components | Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Affected Line in the Consolidated Statements of Income |
Year Ended |
February 26, 2021 | February 28, 2020 |
Realized gain on sale of investment | $ | — |  |  | $ | (0.7) |  |  | Investment income |  |
| — |  |  | 0.2 |  |  | Income tax expense (benefit) |  |
| — |  |  | (0.5) |  |  |  |  |
Amortization of pension and other post-retirement liability adjustments |  |  |  |  |  |  |
Actuarial losses (gains) | (1.1) |  |  | (3.0) |  |  | Other income, net |  |
Prior service cost (credit) | — |  |  | (0.1) |  |  | Other income, net |  |
| 0.3 |  |  | 0.7 |  |  | Income tax expense (benefit) |  |
| (0.8) |  |  | (2.4) |  |  |  |  |
Derivative adjustments | 1.3 |  |  | 1.3 |  |  | Interest expense |  |
| (0.3) |  |  | (0.3) |  |  | Income tax expense (benefit) |  |
| 1.0 |  |  | 1.0 |  |  |  |  |
Foreign currency translation | 0.5 |  |  | 0.6 |  |  | Operating expense |  |
| (0.1) |  |  | 0.1 |  |  | Other income, net |  |
| 0.4 |  |  | 0.7 |  |  |  |  |
Total reclassifications | $ | 0.6 |  |  | $ | (1.2) |  |  |  |  |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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