| Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions | 12 Months Ended | | 2018-2019 change |
| | Oct. 31, 2019 | Oct. 31, 2018 | Change Amount | Percentage change |
| Net revenue |
| Net revenue | 58756 | 58472 | 284 | 0.49% |
| Costs and expenses: |
| Cost of revenue | 47586 | 47803 | -217 | -0.45% |
| Research and development | 1499 | 1404 | 95 | 6.77% |
| Selling, general and administrative | 5368 | 5099 | 269 | 5.28% |
| Restructuring and other charges | 275 | 132 | 143 | 108.33% |
| Acquisition-related charges | 35 | 123 | -88 | -71.54% |
| Amortization of intangible assets | 116 | 80 | 36 | 45.00% |
| Total costs and expenses | 54879 | 54641 | 238 | 0.44% |
| Earnings from operations | 3877 | 3831 | 46 | 1.20% |
| Interest and other, net | -1354 | -818 | -536 | 65.53% |
| Earnings before taxes | 2523 | 3013 | -490 | -16.26% |
| Benefit from (provision for) taxes | 629 | 2314 | -1685 | -72.82% |
| Net earnings | 3152 | 5327 | -2175 | -40.83% |
| Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions | 12 Months Ended | | 2017-2018 change |
| | Oct. 31, 2018 | Oct. 31, 2017 | Change Amount | Percentage change |
| Net revenue |
| Net revenue | 58472 | 52056 | 6416 | 12.33% |
| Costs and expenses: |
| Cost of revenue | 47803 | 42478 | 5325 | 12.54% |
| Research and development | 1404 | 1190 | 214 | 17.98% |
| Selling, general and administrative | 5099 | 4532 | 567 | 12.51% |
| Restructuring and other charges | 132 | 362 | -230 | -63.54% |
| Acquisition-related charges | 123 | 125 | -2 | -1.60% |
| Amortization of intangible assets | 80 | 1 | 79 | 7900.00% |
| Total costs and expenses | 54641 | 48688 | 5953 | 12.23% |
| Earnings from operations | 3831 | 3368 | 463 | 13.75% |
| Interest and other, net | -818 | -92 | -726 | 789.13% |
| Earnings before taxes | 3013 | 3276 | -263 | -8.03% |
| Benefit from (provision for) taxes | 2314 | -750 | 3064 | -408.53% |
| Net earnings | 5327 | 2526 | 2801 | 110.89% |