Overview and Basis of Presentation (Detail) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jul. 31, 2023
USD ($)
|
Jul. 31, 2022
USD ($)
|
Jul. 31, 2023
USD ($)
segment
|
Jul. 31, 2022
USD ($)
|
|
| Property, Plant and Equipment [Line Items] | ||||
| Decrease in depreciation expense | $ (49) | $ (71) | $ (97) | $ (138) |
| Number of operating segments | segment | 1 | |||
| Data Center Equipment | Long-Lived Tangible Assets, Amortization Period | ||||
| Property, Plant and Equipment [Line Items] | ||||
| Decrease in depreciation expense | $ 25 | $ 55 | ||
| Minimum | Data Center Equipment | ||||
| Property, Plant and Equipment [Line Items] | ||||
| Property, plant and equipment, useful life (years) | 3 years | 3 years | ||
| Maximum | Data Center Equipment | ||||
| Property, Plant and Equipment [Line Items] | ||||
| Property, plant and equipment, useful life (years) | 5 years | 5 years | ||