Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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-Name Accounting Standards Codification
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

STOCKHOLDERS' EQUITY - Stock Repurchase Program (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Feb. 18, 2021	Nov. 19, 2018
2019 Repurchase Program [Member]
Share repurchase program
Share repurchase program authorized amount				$ 1,750
Shares repurchased and retired during period, (Shares)	2,885,152	725,827
Shares repurchased and retired during period, (Value)	$ 344	$ 60
Remaining authorized repurchase amount under share repurchase program	$ 214
2019 Repurchase Program [Member] \| Subsequent Event [Member]
Share repurchase program
Remaining authorized repurchase amount under share repurchase program			$ 193
2021 Repurchase Program [Member] \| Subsequent Event [Member]
Share repurchase program
Share repurchase program authorized amount			$ 2,000