BASIS OF PRESENTATION - Assets and Liabilities Held for Sale (Details) - USD ($) $ in Millions	Jul. 31, 2020	Jan. 31, 2020
Current assets:
Total current assets	$ 2,058	$ 0
Current liabilities:
Total current liabilities	344	$ 0
RSA Security | Held-for-sale
Current assets:
Accounts receivable, net	146
Other current assets	30
Total current assets	176
Goodwill	1,383
Intangible assets, net	440
Other non-current assets	57
Total assets	2,056
Current liabilities:
Accrued and other	65
Short-term deferred revenue	229
Total current liabilities	294
Long-term deferred revenue	32
Other non-current liabilities	18
Total liabilities	$ 344