Segment Information (Schedule of Long-Lived Assets by Geographic Area) (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended |
|---|---|---|
Apr. 30, 2021 |
Jan. 29, 2021 |
|
| Revenues From External Customers And Long-Lived Assets [Line Items] | ||
| Long-lived assets by geographic area | $ 1,096 | $ 1,105 |
| United States | ||
| Revenues From External Customers And Long-Lived Assets [Line Items] | ||
| Long-lived assets by geographic area | $ 852 | $ 864 |
| United States | Assets Benchmark | Geographic Concentration Risk | ||
| Revenues From External Customers And Long-Lived Assets [Line Items] | ||
| Concentration risk, percentage | 80.00% | 80.00% |
| International | ||
| Revenues From External Customers And Long-Lived Assets [Line Items] | ||
| Long-lived assets by geographic area | $ 244 | $ 241 |
| India | Assets Benchmark | Geographic Concentration Risk | ||
| Revenues From External Customers And Long-Lived Assets [Line Items] | ||
| Concentration risk, percentage | 10.00% | 10.00% |