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SEGMENT INFORMATION
 9 Months Ended
Jul. 31, 2025
Segment Reporting [Abstract]  
SEGMENT INFORMATION
15.     SEGMENT INFORMATION
We report our results in two reportable segments: CSG and EISG. The results of our reportable segments are based on our management reporting system and are not necessarily in conformity with GAAP. The performance of each segment is measured based on several metrics, including income from operations. These results are used, in part, by the chief operating decision maker in evaluating the performance of, and in allocating resources to, each of the segments.
The profitability of each of the segments is measured after excluding share-based compensation expense, amortization of acquisition-related balances, acquisition and integration costs, restructuring costs, interest income, interest expense and other items as noted in the reconciliations below.
Three Months Ended
July 31,
20252024
CSGEISGTotalCSGEISGTotal
 (in millions)
Revenue$940 $412 $1,352 $847 $370 $1,217 
Segment income from operations$246 $92 $338 $223 $74 $297 
Nine Months Ended
July 31,
20252024
CSGEISGTotalCSGEISGTotal
 (in millions)
Revenue$2,736 $1,220 $3,956 $2,526 $1,166 $3,692 
Segment income from operations$722 $298 $1,020 $672 $274 $946 
The following table reconciles total reportable operating segments’ income from operations to our income before taxes, as reported:
Three Months EndedNine Months Ended
 July 31,July 31,
 2025202420252024
 (in millions)
Total reportable segments' income from operations$338 $297 $1,020 $946 
Share-based compensation(32)(32)(131)(118)
Amortization of acquisition-related balances(33)(31)(100)(106)
Acquisition and integration costs(31)(23)(98)(59)
Restructuring and other(8)(6)(32)(60)
Income from operations, as reported234 205 659 603 
Interest income31 19 71 60 
Interest expense(28)(21)(68)(61)
Other income (expense), net4 10 98 15 
Income before taxes, as reported$241 $213 $760 $617