Leases - Narrative (Details) - USD ($) $ in Millions |
Jan. 31, 2026 |
Jan. 31, 2025 |
|---|---|---|
| Lessee, Lease, Description [Line Items] | ||
| Operating lease right-of-use assets | $ 719 | $ 336 |
| Operating lease liabilities | 834 | $ 378 |
| Operating lease, lease not yet commenced, payment | 11 | |
| Lease for European Headquarters | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating lease right-of-use assets | 313 | |
| Operating lease liabilities | $ 333 | |
| Lease term period, in years | 20 years | |
| Minimum | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating lease, lease not yet commenced, term (years) | 1 year | |
| Maximum | ||
| Lessee, Lease, Description [Line Items] | ||
| Operating lease, lease not yet commenced, term (years) | 6 years |