XML 97 R60.htm IDEA: XBRL DOCUMENT v2.4.1.9
Goodwill and Intangible Assets - Additional Information (Details) (USD $)
 12 Months Ended
Oct. 31, 2014
Oct. 25, 2013
Oct. 26, 2012
Intangible Assets, Excluding Goodwill [Line Items]      
Intangible asset impairment charges $ 0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill $ 155,200,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill $ 0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
Amortization expense for finite-lived intangible assets 26,200,000us-gaap_AmortizationOfIntangibleAssets 13,600,000us-gaap_AmortizationOfIntangibleAssets 37,400,000us-gaap_AmortizationOfIntangibleAssets
Underground Mining Machinery      
Intangible Assets, Excluding Goodwill [Line Items]      
Intangible asset impairment charges   130,200,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= joy_UndergroundMiningMachineryMember		  
Surface Mining Equipment      
Intangible Assets, Excluding Goodwill [Line Items]      
Intangible asset impairment charges   $ 25,000,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= joy_SurfaceMiningEquipmentMember