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Operating leases (Tables)
 3 Months Ended
Nov. 30, 2018
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):
 
For the three months ended November 30, 2018
 
For the twelve months ended August 31, 2018
Balance at beginning of period
$
964

 
$
718

Provision for present value of non-cancellable lease payments on closed facilities
(3
)
 
52

Changes in assumptions
(2
)
 
19

Accretion expense
18

 
58

Other - non cash1
77

 
338

Cash payments, net of sublease income
(84
)
 
(221
)
Balance at end of period
$
970

 
$
964



1 
Represents unfavorable lease liabilities from acquired Rite Aid stores.