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Sales (Tables)
 12 Months Ended
Aug. 31, 2019
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):
 
 
For the years ending August 31,
 
 
2019
 
2018
 
2017
Retail Pharmacy USA
 
 
 
 
 
 
Pharmacy
 
$
77,192

 
$
71,055

 
$
60,608

Retail
 
27,340

 
27,337

 
26,695

Total
 
104,532

 
98,392

 
87,302

 
 
 
 
 
 
 
Retail Pharmacy International
 
 
 
 
 
 
Pharmacy
 
4,080

 
4,360

 
4,180

Retail
 
7,382

 
7,921

 
7,633

Total
 
11,462

 
12,281

 
11,813

 
 
 
 
 
 
 
Pharmaceutical Wholesale
 
23,053

 
23,006

 
21,188

 
 
 
 
 
 
 
Eliminations1
 
(2,180
)
 
(2,142
)
 
(2,089
)
 
 
 
 
 
 
 
Walgreens Boots Alliance, Inc.
 
$
136,866

 
$
131,537

 
$
118,214


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