Goodwill and Intangible Assets (Details) $ in Millions |
6 Months Ended |
|---|---|
|
Apr. 30, 2017
USD ($)
| |
| Goodwill | |
| Balance at beginning of period | $ 24,178 |
| Goodwill acquired during the period | 1,323 |
| Changes due to foreign currency | (1) |
| Goodwill adjustments | (2) |
| Balance at end of period | 25,498 |
| Enterprise Group | |
| Goodwill | |
| Balance at beginning of period | 15,945 |
| Goodwill acquired during the period | 1,323 |
| Changes due to foreign currency | (1) |
| Goodwill adjustments | (2) |
| Balance at end of period | 17,265 |
| Software | |
| Goodwill | |
| Balance at beginning of period | 8,089 |
| Goodwill acquired during the period | 0 |
| Changes due to foreign currency | 0 |
| Goodwill adjustments | 0 |
| Balance at end of period | 8,089 |
| Financial Services | |
| Goodwill | |
| Balance at beginning of period | 144 |
| Goodwill acquired during the period | 0 |
| Changes due to foreign currency | 0 |
| Goodwill adjustments | 0 |
| Balance at end of period | $ 144 |