Cash and held to maturity investments.

No definition available.

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Period Type:	instant

- Definition

Derivative contracts in liability position netted against contract in asset position.

+ References

No definition available.

+ Details

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Namespace Prefix:	adi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 7

-Footnote 2

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 19

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16, 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

+ Details

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13476-108611

+ Details

Name:	us-gaap_DebtInstrumentFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Interest rate stated in the contractual debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Type:	na
Period Type:	instant

- Details

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Fair Value (Details 2) (USD $) In Millions, unless otherwise specified	Feb. 04, 2012	Oct. 29, 2011	Feb. 04, 2012 5.0% Senior unsecured notes due July 1, 2014 [Member]	Oct. 29, 2011 5.0% Senior unsecured notes due July 1, 2014 [Member]	Jun. 30, 2009 5.0% Senior unsecured notes due July 1, 2014 [Member]	Apr. 30, 2011 3.0% Senior unsecured notes due April 15, 2016 [Member]	Feb. 04, 2012 Fair Value, Measurements, Recurring [Member]	Oct. 29, 2011 Fair Value, Measurements, Recurring [Member]	Feb. 04, 2012 Fair Value, Measurements, Recurring [Member] 5.0% Senior unsecured notes due July 1, 2014 [Member]	Oct. 29, 2011 Fair Value, Measurements, Recurring [Member] 5.0% Senior unsecured notes due July 1, 2014 [Member]	Feb. 04, 2012 Financial Instruments Not Recorded at Fair Value on a Recurring Basis [Member] 5.0% Senior unsecured notes due July 1, 2014 [Member]	Feb. 04, 2012 Financial Instruments Not Recorded at Fair Value on a Recurring Basis [Member] 3.0% Senior unsecured notes due April 15, 2016 [Member]	Oct. 29, 2011 Financial Instruments Not Recorded at Fair Value on a Recurring Basis [Member] 3.0% Senior unsecured notes due April 15, 2016 [Member]	Apr. 30, 2011 Financial Instruments Not Recorded at Fair Value on a Recurring Basis [Member] 3.0% Senior unsecured notes due April 15, 2016 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized cost of the Company's investments classified as available for sale							$ 2,997.5	$ 2,284.9
Derivative contracts in asset position netted against contract in liability position							0.4	0.8
Fair value of the long-term debt									410.6	413.4		397.0	392.8
Aggregate principal amount of debt			375	375	375	375			375					375
Interest rate to be paid on long term notes					5.00%	3.00%					3.00%			3.00%
Fair Value (Textual) [Abstract]
Cash and held to maturity investments	$ 81.4	$ 31.6