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Share-Based Compensation (Tables) | 12 Months Ended
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Feb. 28, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of Share Based Payment Award Outstanding Awards [Table Text Block] | Share-based awards currently outstanding under the Incentive Compensation Plan are as follows:
Total Outstanding Awards | February 28, 2020
Performance units (1) | 605,080 |  |
Restricted stock units | 1,761,124 |  |
Total outstanding awards | 2,366,204 |  |
________________________ (1) This amount includes the maximum number of shares that may be issued under outstanding performance unit awards; however, the actual number of shares which may be issued will be determined based on the satisfaction of certain criteria, and therefore may be significantly lower.
Performance Shares [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Share Based Payment Award Performance Units Valuation Assumptions [Table Text Block] | The Monte Carlo simulation was computed using the following assumptions:
| 2020 Awards | 2019 Awards | 2018 Awards
Three-year risk-free interest rate (1) | 2.3 | % |  | 2.6 | % |  | 1.4 | % |
Expected term | 3 years |  |  | 3 years |  |  | 3 years |  |
Estimated volatility (2) | 32.5 | % |  | 33.8 | % |  | 31.8 | % |
________________________
(1) | Based on the U.S. Government bond benchmark on the grant date.
(2) Represents the historical price volatility of our Company’s Class A Common Stock for the three-year period preceding the grant date.
Share-based Payment Arrangement, Cost by Plan [Table Text Block] | The total PSU expense and associated tax benefit for all outstanding awards in 2020, 2019 and 2018 are as follows:
Performance Units | Year Ended
February 28, 2020 | February 22, 2019 | February 23, 2018
Expense | $ | 2.7 |  |  | $ | 4.2 |  |  | $ | 5.0 |  |
Tax benefit | 0.7 |  |  | 1.1 |  |  | 1.7 |  |
Schedule Of Share Based Compensation Performance Units Award Activity [Table Text Block] | The 2020 PSU activity is as follows:
Maximum Number of Nonvested Units | Total | Weighted-Average Grant Date Fair Value per Unit
Nonvested as of February 22, 2019 | 676,800 |  |  | $ | 18.50 |  |
Granted | 237,280 |  |  | 16.21 |  |
Vested | (309,000 | ) |  | 21.76 |  |
Nonvested as of February 28, 2020 | 605,080 |  |  | 17.39 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block] | The Monte Carlo simulation resulted in the following weighted-average grant date fair values per PSU:
Grant Date Fair Value per PSU | Year Ended
February 28, 2020 | February 22, 2019 | February 23, 2018
Weighted-average grant date fair value per share of PSUs granted | $ | 16.21 |  |  | $ | 18.02 |  |  | $ | 21.76 |  |
Restricted Stock Units (RSUs) [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Share-based Payment Arrangement, Cost by Plan [Table Text Block] | 2020, 2019 and 2018 are as follows:
Restricted Stock Units | Year Ended
February 28, 2020 | February 22, 2019 | February 23, 2018
Expense | $ | 13.3 |  |  | $ | 12.7 |  |  | $ | 13.4 |  |
Tax benefit | 3.6 |  |  | 3.4 |  |  | 4.5 |  |
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] | The 2020 RSU activity is as follows:
Nonvested Units | Total | Weighted-Average Grant Date Fair Value per Share
Nonvested as of February 22, 2019 | 1,721,896 |  |  | $ | 15.39 |  |
Granted | 842,609 |  |  | 15.84 |  |
Vested | (760,628 | ) |  | 16.21 |  |
Forfeited | (42,753 | ) |  | 15.40 |  |
Nonvested as of February 28, 2020 | 1,761,124 |  |  | 15.28 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block] | The weighted-average grant date fair value per share of RSUs granted in 2020, 2019 and 2018 is as follows:
Grant Date Fair Value per Share | Year Ended
February 28, 2020 | February 22, 2019 | February 23, 2018
Weighted-average grant date fair value per share of RSUs granted | $ | 15.84 |  |  | $ | 14.67 |  |  | $ | 16.51 |  |

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- Definition Tabular disclosure of the amount of shares, units or options outstanding under a share-based compensation awards program. + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for performance units that were outstanding at the beginning and end of the year, and the number of performance units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of performance units, including, but not limited to: (a) expected term of performance units, (b) expected volatility of the entity's shares and (c) risk-free rate(s). + References No definition available. + Details
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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the weighted-average grant-date fair value of equity options or other equity instruments granted during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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