Debt Instrument, Interest Period

No definition available.

Name:	joy_DebtInstrumentInterestPeriod
Namespace Prefix:	joy_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Additional Borrowing Capacity

+ References

No definition available.

+ Details

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

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ 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

+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the 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

+ Details

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

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph e

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: 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 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

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

Reference 1: 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_LineOfCreditFacilityAmountOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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 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_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

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Borrowings and Credit Facilities (Details Textual) (USD $)		0 Months Ended			0 Months Ended			0 Months Ended			0 Months Ended					0 Months Ended
	Jun. 16, 2011 Term Loan due 2016	Oct. 12, 2011 5.125% Senior Notes due 2021	May 02, 2014 5.125% Senior Notes due 2021	Oct. 25, 2013 5.125% Senior Notes due 2021	Nov. 01, 2006 6.0% Senior Notes due 2016	May 02, 2014 6.0% Senior Notes due 2016	Oct. 25, 2013 6.0% Senior Notes due 2016	Nov. 01, 2006 6.625% Senior Notes due 2036	May 02, 2014 6.625% Senior Notes due 2036	Oct. 25, 2013 6.625% Senior Notes due 2036	Oct. 12, 2011 Treasury Rate 5.125% Senior Notes due 2021	Nov. 01, 2006 Treasury Rate 6.0% Senior Notes due 2016	Nov. 01, 2006 Treasury Rate 6.625% Senior Notes due 2036	May 02, 2014 Revolving Credit Facility	Oct. 12, 2012 Revolving Credit Facility	Oct. 12, 2012 Revolving Credit Facility Eurodollar Interest Period One	Oct. 12, 2012 Revolving Credit Facility Eurodollar Interest Period Two	Oct. 12, 2012 Revolving Credit Facility Eurodollar Interest Period Three	Oct. 12, 2012 Revolving Credit Facility Eurodollar Interest Period Four	Oct. 12, 2012 Revolving Credit Facility Eurodollar Interest Period Five	Oct. 12, 2012 Revolving Credit Facility Eurodollar Interest Period Six	Oct. 12, 2012 Revolving Credit Facility Eurodollar Rate	Oct. 12, 2012 Revolving Credit Facility Federal Funds Rate	Oct. 12, 2012 Revolving Credit Facility Minimum	Oct. 12, 2012 Revolving Credit Facility Minimum Eurodollar Rate	Oct. 12, 2012 Revolving Credit Facility Maximum	Oct. 12, 2012 Revolving Credit Facility Maximum Eurodollar Rate
Line of Credit Facility [Line Items]
Unsecured revolving credit facility (Credit Agreement) maximum borrowing capacity															$ 1,000,000,000
Line of credit additional borrowing capacity															250,000,000
Line of credit commitment fee percentage on unused capacity																								0.10%		0.325%
Interest period																7 days	14 days	1 month	2 months	3 months	6 months
Basis spread on variable rate											0.50%	0.30%	0.375%									1.00%	0.50%		1.00%		2.00%
Line of credit amount outstanding														0
Letters of credit outstanding														187,600,000
Available borrowing capacity														812,400,000
Principal amount	500,000,000.0	500,000,000.0			250,000,000.0			150,000,000.0
Interest rate		5.125%	5.125%	5.125%	6.00%	6.00%	6.00%	6.625%	6.625%	6.625%
Discount on note payable		$ 4,200,000
Percentage of principal amount of notes to be redeemed at company's option		100.00%			100.00%			100.00%