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Segment Information and Major Customers | 3 Months Ended
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Oct. 25, 2025
Segment Reporting [Abstract] |
Segment Information and Major Customers | Segment Information and Major Customers (a)Revenue and Gross Margin by Segment We conduct business globally and are primarily managed on a geographic basis consisting of three segments: the Americas, EMEA, and APJC. Our chief executive officer is the chief operating decision maker (CODM). The CODM reviews certain financial information for each segment, to evaluate performance and allocate resources by comparing actual performance to our annual targets. Performance of each segment is measured based on segment revenue and segment gross margin. Sales are attributed to a segment based on the location of the customer. We do not allocate research and development, sales and marketing, or general and administrative expenses to our segments because the CODM does not include this information in our measurement of performance of the operating segments. In addition, we do not allocate amortization and impairment of acquisition-related intangible assets, share-based compensation expense, significant litigation settlements and other contingencies, charges related to asset impairments and restructurings, and certain other charges to the cost of sales and gross margin for each segment because the CODM does not include this information in the measurement of the performance of our operating segments. The following summarizes our revenue and gross margin by segment and the significant expenses by each segment (in millions):
| Three Months Ended
| October 25, 2025 |  | October 26, 2024
Revenue: |  |  |
Americas | $ | 8,989 |  |  | $ | 8,252 |
EMEA | 3,784 |  |  | 3,588 |
APJC | 2,111 |  |  | 2,001 |
Total | $ | 14,883 |  |  | $ | 13,841 |
Gross margin: |  |  |
Americas | $ | 6,001 |  |  | $ | 5,740 |
EMEA | 2,722 |  |  | 2,522 |
APJC | 1,413 |  |  | 1,328 |
Segment total | 10,136 |  |  | 9,590 |
Unallocated corporate items | (391) |  |  | (469) |
Total | $ | 9,745 |  |  | $ | 9,121 |
Supplemental information about our significant expenses: |  |  |
Americas: |  |  |
Cost of sales — product | $ | 2,349 |  |  | $ | 1,877 |
Cost of sales — services | 639 |  |  | 635 |
Segment total | $ | 2,988 |  |  | $ | 2,512 |
EMEA: |  |  |
Cost of sales — product | $ | 768 |  |  | $ | 778 |
Cost of sales — services | 294 |  |  | 288 |
Segment total | $ | 1,062 |  |  | $ | 1,066 |
APJC: |  |  |
Cost of sales — product | $ | 514 |  |  | $ | 490 |
Cost of sales — services | 184 |  |  | 183 |
Segment total | $ | 698 |  |  | $ | 673 |
Amounts may not sum due to rounding. Revenue in the United States was $8.1 billion and $7.4 billion for the first quarter of fiscal 2026 and 2025, respectively. (b)Revenue for Groups of Similar Products and Services We design and sell IP-based networking and other products related to the communications and IT industry and provide services associated with these products and their use. The following table presents revenue for groups of similar products and services (in millions):
| Three Months Ended
| October 25, 2025 |  | October 26, 2024
Revenue: |
Networking | $ | 7,768 |  |  | $ | 6,753 |
Security | 1,980 |  |  | 2,017 |
Collaboration | 1,055 |  |  | 1,085 |
Observability | 274 |  |  | 258 |
Total Product | 11,077 |  |  | 10,114 |
Services | 3,806 |  |  | 3,727 |
Total | $ | 14,883 |  |  | $ | 13,841 |
Amounts may not sum due to rounding.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-21 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name 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