Percentage plus with Eurodollar Effective Rate calculation when determining interest rate options on credit facilities.

No definition available.

Name:	joy_EurodollarRateplusPercentage
Namespace Prefix:	joy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage plus with the Federal Funds Effective Rate calculation when determining interest rate options on credit facilities.

+ References

No definition available.

+ Details

Name:	joy_FederalFundsEffectiveRatePlusPercentage
Namespace Prefix:	joy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

An irrevocable undertaking to guarantee payment of a specified financial obligation written under an existing credit facility.

+ References

No definition available.

+ Details

Name:	joy_LettersOfCreditIssuedUnderCreditFacility
Namespace Prefix:	joy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Additional Borrowing Capacity

+ References

No definition available.

+ Details

Name:	joy_LineOfCreditAdditionalBorrowingCapacity
Namespace Prefix:	joy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage interest rate fee range maximum for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	joy_LineOfCreditFacilityCommitmentFeeAmountInterestRateRangeMaximum
Namespace Prefix:	joy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage interest rate fee range minimum for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	joy_LineOfCreditFacilityCommitmentFeeAmountInterestRateRangeMinimum
Namespace Prefix:	joy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Previous maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

No definition available.

+ Details

Name:	joy_LineOfCreditFacilityMaximumBorrowingCapacityPrevious
Namespace Prefix:	joy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage of the principal amount of debt instruments used when calculating a redemption price for previously issued debt instruments.

+ References

No definition available.

+ Details

Name:	joy_PercentageOfPrincipalAmountOfNotesRedeemed
Namespace Prefix:	joy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Interest rate of a comparable treasury issue plus this percentage used when calculating a redemption price for previously issued debt instruments.

+ References

No definition available.

+ Details

Name:	joy_TreasuryComparableIssuePlusPercentage
Namespace Prefix:	joy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16

-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 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

+ Details

Name:	us-gaap_AmortizationOfDebtDiscountPremium
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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 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 2: 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

Reference 3: 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.

+ Details

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

- Definition

Interest rate stated in the contractual debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ 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)(2))

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

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-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.

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-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 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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

Borrowings and Credit Facilities - Additional Information (Detail) (USD $)	12 Months Ended
	Oct. 26, 2012	Oct. 26, 2012 Minimum [Member]	Oct. 26, 2012 Maximum [Member]	Oct. 26, 2012 Credit Agreement [Member]	Oct. 26, 2012 Term Loan due 2016 [Member]	Oct. 28, 2011 5.125% Senior Notes due 2021 [Member]	Oct. 26, 2012 5.125% Senior Notes due 2021 [Member]	Oct. 26, 2012 6.0% Senior Notes due 2016 [Member]	Oct. 26, 2012 6.625% Senior Notes due 2036 [Member]
Line of Credit Facility [Line Items]
Unsecured revolving credit facility (Credit Agreement), previous maximum borrowing capacity				$ 1,000,000,000
Additional aggregate revolving commitments				250,000,000
Expiration date				Nov. 12, 2017
Unsecured revolving credit facility (Credit Agreement), maximum borrowing capacity				700,000,000
Commitment fee interest percentage range, minimum		0.10%
Commitment fee interest percentage range, maximum			0.325%
Eurodollar rate plus percentage	1.00%	1.00%	2.00%
Federal funds rate plus percentage	0.50%
Outstanding letters of credit issued under the Credit Agreement				279,000,000
Available borrowing capacity				721,000,000
Maturity date					Jun. 16, 2016
Principal amount					500,000,000	500,000,000		250,000,000	150,000,000
Interest rate						5.125%	5.125%	6.00%	6.625%
Discount on Note payable						$ 4,200,000
Treasury rate of a comparable issue plus percentage						0.50%		0.30%	0.375%
Percentage of principal amount of notes to be redeemed at company's option (in hundredths)						100.00%		100.00%