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Stock-Based Compensation - Stock Compensation Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Jul. 31, 2025 | Jul. 31, 2024 | Jul. 31, 2025 | Jul. 31, 2024
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense before taxes | $ 267,723 | $ 181,539 | $ 655,909 | $ 540,026
Income tax benefit | (38,686) | (29,972) | (94,779) | (89,158)
Stock-based compensation expense after taxes | 229,037 | 151,567 | 561,130 | 450,868
Continuing Operations |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense before taxes | 267,723 | 164,354 | 655,909 | 492,550
Discontinued operations |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense before taxes | 0 | 17,185 | 0 | 47,476
Cost of products |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense before taxes | 22,943 | 14,645 | 66,470 | 44,824
Cost of maintenance and service |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense before taxes | 10,222 | 9,677 | 28,715 | 28,126
Research and development expense |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense before taxes | 113,861 | 89,279 | 326,274 | 269,087
Sales and marketing expense |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense before taxes | 45,564 | 30,251 | 117,214 | 91,811
General and administrative expense |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense before taxes | $ 75,133 | $ 20,502 | $ 117,236 | $ 58,702

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