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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 Diagnostics Markets |  |  |
Select income statement components |  |  |
Net revenue | 2,466 | 2,780 | 2,844
Life Sciences and Diagnostics Markets | Operating Segments |  |  |
Select income statement components |  |  |
Net revenue | 2,466 | 2,780 | 2,844
Income from operations | 484 | 673 | 711
Share-based compensation expense | 46 | 48 | 52
Depreciation expense | 72 | 60 | 57
Agilent CrossLab |  |  |
Select income statement components |  |  |
Net revenue | 2,747 | 2,656 | 2,563
Agilent CrossLab | Operating Segments |  |  |
Select income statement components |  |  |
Net revenue | 2,747 | 2,656 | 2,563
Income from operations | 925 | 839 | 779
Share-based compensation expense | 48 | 40 | 43
Depreciation expense | 54 | 46 | 42
Applied Markets |  |  |
Select income statement components |  |  |
Net revenue | 1,297 | 1,397 | 1,441
Applied Markets | Operating Segments |  |  |
Select income statement components |  |  |
Net revenue | 1,297 | 1,397 | 1,441
Income from operations | 312 | 363 | 367
Share-based compensation expense | 24 | 24 | 25
Depreciation expense | $ 23 | $ 22 | $ 21

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