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Share-Based Compensation (Tables) | 6 Months Ended
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Aug. 23, 2019
Performance Units [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of Valuation Assumptions for Performance Unit Awards | The weighted-average grant date fair values were determined using the following assumptions:
| 2020 Awards
Three-year risk-free interest rate (1) | 2.3 | %
Expected term | 3 years |
Estimated volatility (2) | 32.5 | %
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(1) | Based on the U.S. government bond benchmark on the grant date.
(2) Represents the historical price volatility of the Company’s common stock for the three-year period preceding the grant date.
Schedule of Compensation Costs by Plan for Share-based Payment Arrangements | The total PSU expense and associated tax benefit for all outstanding awards for the three and six months ended August 23, 2019 and August 24, 2018 are as follows:
| Three Months Ended | Six Months Ended
Performance Units | August 23, 2019 | August 24, 2018 | August 23, 2019 | August 24, 2018
Expense | $ | 0.3 |  |  | $ | 1.2 |  |  | $ | 1.7 |  |  | $ | 3.5 |  |
Tax benefit | 0.1 |  |  | 0.4 |  |  | 0.5 |  |  | 1.0 |  |
Schedule of Performance Unit Awards Activity | The PSU activity for the six months ended August 23, 2019 is as follows:
Maximum Number of Shares That May Be Issued Under 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 |
Nonvested as of August 23, 2019 | 914,080 |  | $ | 18.93 |
Restricted Stock Units [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of Compensation Costs by Plan for Share-based Payment Arrangements | The RSU expense and associated tax benefit for all outstanding awards for the three and six months ended August 23, 2019 and August 24, 2018 are as follows:
| Three Months Ended | Six Months Ended
Restricted Stock Units | August 23, 2019 | August 24, 2018 | August 23, 2019 | August 24, 2018
Expense | $ | 2.0 |  |  | $ | 2.3 |  |  | $ | 9.9 |  |  | $ | 9.0 |  |
Tax benefit | 0.5 |  |  | 0.6 |  |  | 2.7 |  |  | 2.4 |  |
Schedule of Restricted Stock Unit Awards Activity | The RSU activity for the six months ended August 23, 2019 is as follows:
Nonvested Units | Total | Weighted-Average Grant Date Fair Value per Unit
Nonvested as of February 22, 2019 | 1,721,896 |  | $ | 15.39 |
Granted | 722,209 |  | 15.51 |
Vested | (37,683 | ) | 15.05 |
Forfeited | (25,695 | ) | 15.21 |
Nonvested as of August 23, 2019 | 2,380,727 |  | $ | 15.43 |

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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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