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SEGMENT INFORMATION - Profitability (Details) $ in Millions | 12 Months Ended
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Oct. 31, 2024 USD ($) segment | Oct. 31, 2023 USD ($) segment | Oct. 31, 2022 USD ($) segment
Segment Reporting [Abstract] |  |  |
Number of operating segments | segment | 3 | 3 | 3
Select income statement components |  |  |
Net revenue | $ 6,510 | $ 6,833 | $ 6,848
Income from operations | 1,488 | 1,350 | 1,618
Share-based compensation expense | 130 | 112 | 126
Depreciation expense | $ 149 | $ 128 | $ 120
Number of operating segments | segment | 3 | 3 | 3
Operating Segments |  |  |
Select income statement components |  |  |
Income from operations | $ 1,721 | $ 1,875 | $ 1,857
Segment Reporting, Reconciling Item, Corporate Nonsegment |  |  |
Select income statement components |  |  |
Share-based compensation expense | 12 | 0 | 6
Life Sciences and Applied Markets |  |  |
Select income statement components |  |  |
Net revenue | 3,215 | 3,510 | 3,630
Life Sciences and Applied Markets | Operating Segments |  |  |
Select income statement components |  |  |
Net revenue | 3,215 | 3,510 | 3,630
Income from operations | 877 | 1,049 | 1,097
Share-based compensation expense | 59 | 60 | 62
Depreciation expense | 64 | 58 | 55
Diagnostics and Genomics |  |  |
Select income statement components |  |  |
Net revenue | 1,651 | 1,755 | 1,766
Diagnostics and Genomics | Operating Segments |  |  |
Select income statement components |  |  |
Net revenue | 1,651 | 1,755 | 1,766
Income from operations | 320 | 363 | 390
Share-based compensation expense | 30 | 28 | 32
Depreciation expense | 56 | 45 | 43
Agilent CrossLab |  |  |
Select income statement components |  |  |
Net revenue | 1,644 | 1,568 | 1,452
Agilent CrossLab | Operating Segments |  |  |
Select income statement components |  |  |
Net revenue | 1,644 | 1,568 | 1,452
Income from operations | 524 | 463 | 370
Share-based compensation expense | 29 | 24 | 26
Depreciation expense | $ 29 | $ 25 | $ 22

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