LEASES - Supplemental Balance Sheet Information (Details) $ in Millions	Apr. 30, 2020 USD ($)
Operating lease liability, Current	$ 51
Operating lease liability, Noncurrent	$ 138
Weighted average remaining lease term (in years) - Operating leases	8 years 1 month
Weighted average discount rate - Operating leases	2.10%
Other assets
Right-of-Use Asset	$ 188
Other accrued liabilities
Operating lease liability, Current	51
Other long-term liabilities
Operating lease liability, Noncurrent	$ 138