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STOCKHOLDERS' EQUITY - Stock Repurchase Program (Details) - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
	Nov. 22, 2013	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015	May. 28, 2015
Share repurchase program
Cost to repurchases shares of common stock under share repurchase program				$ 294	$ 168
2014 Share Repurchase Program
Share repurchase program
Share repurchase program authorized amount	$ 1,000
Maintain weighted average diluted shares count (in shares)	335.0
Cost to repurchases shares of common stock under share repurchase program			$ 168	$ 98
Number of shares repurchased (in shares)			4.0	2.4
2015 Repurchase Program
Share repurchase program
Share repurchase program authorized amount						$ 1,140
Cost to repurchases shares of common stock under share repurchase program		$ 94		$ 196
Number of shares repurchased (in shares)		2.6		5.1
Remaining authorized repurchase amount under share repurchase program		$ 944		$ 944

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The approximate number of weighted average diluted shares the new repurchase program announced on November 22, 2013, is designed to maintain.

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- Definition

The cash outflow to reacquire common stock during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

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