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Sales (Tables)
12 Months Ended
Aug. 31, 2021
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,
202120202019
United States
Pharmacy$84,892 $80,481 $77,299 
Retail27,113 27,220 27,233 
Total$112,005 $107,701 $104,532 
International
Pharmacy$3,808 $3,503 $3,653 
Retail6,225 5,902 7,177 
Wholesale10,472 4,876 4,713 
Total$20,505 $14,281 $15,542 
Walgreens Boots Alliance, Inc.$132,509 $121,982 $120,074