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Stock Incentive Plan (Tables)
 9 Months Ended
Nov. 23, 2012
Performance Units [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]
The total performance units expense and associated tax benefit for all outstanding awards for the three and nine months ended November 23, 2012 and November 25, 2011 are as follows:
 
Three Months Ended
Nine Months Ended
Performance Units
November 23,
2012
November 25,
2011
November 23,
2012
November 25,
2011
Expense
$
0.7

 
$
1.2

 
$
4.8

 
$
7.3

 
Tax benefit
0.2

 
0.4

 
1.8

 
2.8

 
Schedule of Share-based Payment Award, Performance Units, Valuation Assumptions [Table Text Block]
The fair value of the performance units awarded was calculated on the grant date using the Monte Carlo simulation model with the following assumptions:
 
2013 Awards
2012 Awards
2011 Awards
Three-year risk-free interest rate (1)
0.5
%
1.4
%
1.7
%
Expected term
3 years

3 years

3 years

Estimated volatility (2)
49.8
%
50.9
%
49.2
%
_______________________________________
(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 Share-based Compensation, Performance Units, Award Activity [Table Text Block]
The performance units activity for the nine months ended November 23, 2012 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 24, 2012 (1)
2,529,690

$
12.00

Granted
1,080,940

11.92

Forfeited
(320,600
)
11.98

Nonvested as of November 23, 2012 (1)
3,290,030

$
11.97

_______________________________________
(1)
Total nonvested includes 194,750 units as of February 24, 2012 and 169,750 units as of November 23, 2012 which represent the 25.0% portion of the awards granted in 2011 which are not subject to performance conditions. The reduction is due to the forfeiture of units during 2013.
Restricted Stock Units (RSUs) [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]
The restricted stock units expense and associated tax benefit for all outstanding awards for the three and nine months ended November 23, 2012 and November 25, 2011 are as follows:
 
Three Months Ended
Nine Months Ended
Restricted Stock Units
November 23,
2012
November 25,
2011
November 23,
2012
November 25,
2011
Expense
$
0.8

 
$
0.9

 
$
3.0

 
$
2.7

 
Tax benefit
0.4

 
0.3

 
1.2

 
1.0

 
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
The restricted stock units activity for the nine months ended November 23, 2012 is as follows:
Nonvested Units
Total
Weighted-Average
Grant Date
Fair Value
per Unit
Nonvested as of February 24, 2012
880,837

$
8.70

Granted
550,672

9.63

Vested
(155,582
)
6.04

Forfeited
(41,700
)
10.09

Nonvested as of November 23, 2012
1,234,227

$
9.41