WALGREEN CO | 2013 | FY | 3

Rental expense, which includes common area maintenance, insurance and taxes, was as follows (in millions):

 
 
2013
  
2012
  
2011
 
Minimum rentals
 
$
2,644
  
$
2,585
  
$
2,506
 
Contingent rentals
  
6
   
6
   
9
 
Less:  Sublease rental income
  
(22
)
  
(20
)
  
(15
)
 
 
$
2,628
  
$
2,571
  
$
2,500
 

us-gaap:ScheduleOfRentExpenseTableTextBlock