Derivative Instruments - Narrative (Details) - USD ($) $ in Millions |
9 Months Ended | |
|---|---|---|
Oct. 31, 2022 |
Jan. 31, 2022 |
|
| Derivative [Line Items] | ||
| Net gains on cash flow hedges estimated to be reclassified into income within the next 12 months | $ 39 | |
| Non-designated hedges | Long | ||
| Derivative [Line Items] | ||
| Derivative, notional amount | 127 | $ 217 |
| Non-designated hedges | Short | ||
| Derivative [Line Items] | ||
| Derivative, notional amount | 34 | 8 |
| Cash flow hedges | Cash flow hedges | Long | ||
| Derivative [Line Items] | ||
| Derivative, notional amount | 1,600 | 1,400 |
| Cash flow hedges | Cash flow hedges | Short | ||
| Derivative [Line Items] | ||
| Derivative, notional amount | $ 365 | $ 355 |
| Cash flow hedges | Cash flow hedges | Maximum | ||
| Derivative [Line Items] | ||
| Derivative, remaining maturity (in months) | 48 months |