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Operating Leases (Tables)
 9 Months Ended
May 31, 2016
Operating Leases [Abstract]  
Reserve for Facility Closings and Related Lease Termination Charges
The changes in reserve for facility closings and related lease termination charges include the following (in millions):

  
Nine Month
Period Ended
May 31,
2016
  
Twelve Month
Period Ended
August 31,
2015
 
Balance – beginning of period
 
$
446
  
$
257
 
Provision for present value of non-cancellable lease payments on closed facilities
  
89
   
231
 
Assumptions about future sublease income, terminations and changes in interest rates
  
(19
)
  
(6
)
Interest accretion
  
21
   
27
 
Liability assumed through acquisition of Alliance Boots
  
-
   
13
 
Cash payments, net of sublease income
  
(81
)
  
(76
)
Balance – end of period
 
$
456
  
$
446