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Revenue (Tables)
 12 Months Ended
Jul. 26, 2025
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue
The following table presents this disaggregation of revenue (in millions):
Years EndedJuly 26, 2025July 27, 2024July 29, 2023
Product revenue:
Networking$28,304 $29,229 $34,570 
Security8,094 5,075 3,859 
Collaboration4,154 4,113 4,052 
Observability1,055 837 661 
Total Product41,608 39,253 43,142 
Services15,046 14,550 13,856 
Total revenue$56,654 $53,803 $56,998 
Our subscription revenue is recorded in product and services revenue in our Consolidated Statements of Operations as follows (in millions):
Years EndedJuly 26, 2025July 27, 2024July 29, 2023
Product$17,783 $14,078 $11,931 
Services13,743 13,302 12,709 
Total$31,526 $27,380 $24,640 
The following table presents revenue for groups of similar products and services (in millions):
Years EndedJuly 26, 2025July 27, 2024July 29, 2023
Revenue:
Networking$28,304 $29,229 $34,570 
Security8,094 5,075 3,859 
Collaboration4,154 4,113 4,052 
Observability1,055 837 661 
Total Product41,608 39,253 43,142 
Services15,046 14,550 13,856 
Total$56,654 $53,803 $56,998 
Allowance for Credit Loss for Accounts Receivable
The allowances for credit loss for our accounts receivable are summarized as follows (in millions):
July 26, 2025July 27, 2024July 29, 2023
Allowance for credit loss at beginning of fiscal year$87 $85 $83 
Provisions33 36 39 
Recoveries (write-offs), net(51)(34)(37)
Allowance for credit loss at end of fiscal year$69 $87 $85 
Schedule of Gross Contract Assets by Internal Risk Ratings
Gross contract assets by our internal risk ratings are summarized as follows (in millions):
July 26, 2025July 27, 2024
1 to 4$1,358 $1,266 
5 to 61,868 1,456 
7 and Higher73 72 
Total$3,299 $2,794