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Goodwill and other intangible assets
 3 Months Ended
Nov. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and other intangible assets Goodwill and other intangible assets
The changes in the carrying amount of goodwill by reportable segment are as follows (in millions):
Goodwill roll forward:U.S. Retail PharmacyInternationalU.S. HealthcareWalgreens Boots Alliance, Inc.
August 31, 2023$10,947 $1,378 $15,863 $28,187 
Adjustments 1
— — 21 21 
Cumulative translation adjustments and other— (17)(8)(25)
November 30, 2023$10,947 $1,361 $15,876 $28,184 

1Includes measurement period adjustments related to VillageMD's fiscal 2023 acquisitions. See Note 2. Acquisitions and other investments for further information.
The carrying amount and accumulated amortization of intangible assets consist of the following (in millions):
Intangible assets:November 30, 2023August 31, 2023
Gross amortizable intangible assets  
Customer relationships and loyalty card holders 1
$4,630 $4,658 
Provider networks3,148 3,202 
Trade names and trademarks2,296 2,300 
Developed technology469 469 
Others113 137 
Total gross amortizable intangible assets$10,656 $10,767 
Accumulated amortization  
Customer relationships and loyalty card holders 1
$1,825 $1,784 
Provider networks281 233 
Trade names and trademarks439 401 
Developed technology162 143 
Others52 48 
Total accumulated amortization2,759 2,609 
Total amortizable intangible assets, net$7,898 $8,158 
Indefinite-lived intangible assets  
Trade names and trademarks$4,566 $4,650 
Pharmacy licenses813 828 
Total indefinite-lived intangible assets$5,380 $5,477 
Total intangible assets, net$13,278 $13,635 

1Includes purchased prescription files.

Amortization expense for intangible assets was $240 million and $159 million for the three months ended November 30, 2023 and 2022, respectively. Estimated future annual amortization expense for the next five fiscal years for intangible assets recorded at November 30, 2023 is as follows (in millions):
 2024 (Remaining period)20252026202720282029
Estimated annual amortization expense$702 $901 $865 $783 $706 $662