Revenue, Unearned Revenue and Remaining Performance Obligations (Summary of Unearned Revenue) (Details) - USD ($) $ in Millions |
Apr. 30, 2021 |
Jan. 29, 2021 |
|---|---|---|
| Disaggregation of Revenue [Line Items] | ||
| Unearned revenue | $ 10,200 | $ 10,314 |
| Unearned license revenue | ||
| Disaggregation of Revenue [Line Items] | ||
| Unearned revenue | 16 | 15 |
| Unearned subscription and SaaS revenue | ||
| Disaggregation of Revenue [Line Items] | ||
| Unearned revenue | 2,064 | 1,998 |
| Unearned software maintenance revenue | ||
| Disaggregation of Revenue [Line Items] | ||
| Unearned revenue | 6,957 | 7,092 |
| Unearned professional services revenue | ||
| Disaggregation of Revenue [Line Items] | ||
| Unearned revenue | $ 1,163 | $ 1,209 |