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Share-Based Employee Compensation (Tables)
6 Months Ended
Jun. 15, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of weighted-average assumptions used to value grants, by year
The following weighted-average assumptions used to value Safeway’s grants of stock options through the second quarter, by year, are as follows: 
 
2013
 
2012
Expected life (in years)
6.25

-
6.5

 
6.25

-
6.5

Expected stock volatility
31.6
%
-
33.0
%
 
31.6
%
-
30.6
%
Risk-free interest rate
1.1
%
-
1.3
%
 
1.2
%
-
1.3
%
Expected dividend yield during the expected term
3.8%
 
2.8%