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SEGMENT INFORMATION
 6 Months Ended
Apr. 30, 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
April 30,
20252024
CSGEISGTotalCSGEISGTotal
 (in millions)
Revenue$913 $393 $1,306 $840 $376 $1,216 
Segment income from operations$236 $92 $328 $223 $71 $294 
Six Months Ended
April 30,
20252024
CSGEISGTotalCSGEISGTotal
 (in millions)
Revenue$1,796 $808 $2,604 $1,679 $796 $2,475 
Segment income from operations$476 $206 $682 $449 $200 $649 
The following table reconciles total reportable operating segments’ income from operations to our income before taxes, as reported:
Three Months EndedSix Months Ended
 April 30,April 30,
 2025202420252024
 (in millions)
Total reportable segments' income from operations$328 $294 $682 $649 
Share-based compensation(37)(36)(99)(86)
Amortization of acquisition-related balances(34)(37)(67)(75)
Acquisition and integration costs(39)(19)(67)(36)
Restructuring and other(11)(25)(24)(54)
Income from operations, as reported207 177 425 398 
Interest income21 18 40 41 
Interest expense(20)(20)(40)(40)
Other income (expense), net112 — 94 5 
Income before taxes, as reported$320 $175 $519 $404