LEASES - Supplemental Balance Sheet Information (Details) $ in Millions	Jul. 31, 2020 USD ($)
Operating lease liability, Current	$ 52
Operating lease liability, Noncurrent	$ 133
Weighted average remaining lease term (in years) - Operating leases	7 years 11 months
Weighted average discount rate - Operating leases	2.00%
Other assets
Right-of-Use Asset	$ 183
Other accrued liabilities
Operating lease liability, Current	52
Other long-term liabilities
Operating lease liability, Noncurrent	$ 133