Deferred Costs (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Oct. 31, 2022 |
Oct. 31, 2021 |
Oct. 31, 2022 |
Oct. 31, 2021 |
Jan. 31, 2022 |
|
| Revenue from Contract with Customer [Abstract] | |||||
| Deferred sales commission | $ 531 | $ 531 | $ 494 | ||
| Amortization of deferred costs | 45 | $ 36 | 127 | $ 101 | |
| Capitalized contract cost, impairment loss | $ 0 | $ 0 | $ 0 | $ 0 | |