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Sales (Tables)
 3 Months Ended
Nov. 30, 2018
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue
The following table summarizes the Company’s sales by segment and by major source (in millions):
 
 
Three months ended November 30,
 
 
2018
 
2017
Retail Pharmacy USA
 
 
 
 
Pharmacy
 
$
19,147

 
$
16,282

Retail
 
6,574

 
6,207

Total
 
25,721

 
22,489

 
 
 
 
 
Retail Pharmacy International
 
 
 
 
Pharmacy
 
1,039

 
1,104

Retail
 
1,862

 
1,979

Total
 
2,901

 
3,083

 
 
 
 
 
Pharmaceutical Wholesale
 
5,708

 
5,718

 
 
 
 
 
Eliminations1
 
(537
)
 
(550
)
 
 
 
 
 
Walgreens Boots Alliance, Inc.
 
$
33,793

 
$
30,740


1 
Eliminations relate to intersegment sales between the Pharmaceutical Wholesale and the Retail Pharmacy International segments.