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Sales
3 Months Ended
Nov. 30, 2021
Revenue from Contract with Customer [Abstract]  
Sales Sales
The following table summarizes the Company’s sales by segment and by major source (in millions):
Three months ended November 30,
20212020
United States
Pharmacy$21,105 $20,869 
Retail6,927 6,294 
Total28,032 27,163 
International
Pharmacy1,017 895 
Retail1,796 1,522 
Wholesale3,005 1,868 
Total5,818 4,285 
Walgreens Health51 — 
Corporate and Other 1
— (10)
Walgreens Boots Alliance, Inc.$33,901 $31,438 
1Includes certain eliminations.

See Note 19 Supplemental information for further information on receivables from contracts with customers.