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DERIVATIVES, Disclosures and derivative instrument aggregated notional amounts by currency and designations (Details) - Foreign Exchange Forward $ in Millions	Jul. 31, 2020 USD ($) contracts
Cash Flow Hedging
Derivative [Line Items]
Number of Foreign Currency Derivatives Held | contracts	193
Not Designated as Hedging Instrument
Derivative [Line Items]
Number of Foreign Currency Derivatives Held | contracts	62
Designated as Hedging Instruments | Buy | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount	$ (22)
Designated as Hedging Instruments | Buy | Euro | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount	(17)
Designated as Hedging Instruments | Buy | British Pound | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount	0
Designated as Hedging Instruments | Buy | Singapore Dollar | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount	(18)
Designated as Hedging Instruments | Buy | Malaysian Ringgit | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount	(82)
Designated as Hedging Instruments | Sell | Japanese Yen | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount	(78)
Designated as Hedging Instruments | Sell | Other Currency | Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount	(17)
Not Designated as Hedging Instrument | Buy | Euro
Derivative [Line Items]
Derivative, Notional Amount	(59)
Not Designated as Hedging Instrument | Buy | Singapore Dollar
Derivative [Line Items]
Derivative, Notional Amount	(11)
Not Designated as Hedging Instrument | Buy | Malaysian Ringgit
Derivative [Line Items]
Derivative, Notional Amount	(9)
Not Designated as Hedging Instrument | Buy | Other Currency
Derivative [Line Items]
Derivative, Notional Amount	(9)
Not Designated as Hedging Instrument | Sell
Derivative [Line Items]
Derivative, Notional Amount	(55)
Not Designated as Hedging Instrument | Sell | British Pound
Derivative [Line Items]
Derivative, Notional Amount	(75)
Not Designated as Hedging Instrument | Sell | Japanese Yen
Derivative [Line Items]
Derivative, Notional Amount	$ (68)

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

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Number of foreign currency exchange rate derivatives held by the entity at the reporting date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

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