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Acquisitions - Additional Information (Details)
Share data in Millions, except Per Share data, unless otherwise specified
0 Months Ended 6 Months Ended 7 Months Ended 12 Months Ended 27 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended
Dec. 29, 2011
International Mining Machinery Holdings Ltd.
USD ($)
Dec. 29, 2011
International Mining Machinery Holdings Ltd.
USD ($)
Dec. 29, 2011
International Mining Machinery Holdings Ltd.
HKD
Feb. 10, 2012
International Mining Machinery Holdings Ltd.
Oct. 25, 2013
International Mining Machinery Holdings Ltd.
USD ($)
Oct. 26, 2012
International Mining Machinery Holdings Ltd.
USD ($)
Jul. 25, 2012
International Mining Machinery Holdings Ltd.
USD ($)
Oct. 25, 2013
International Mining Machinery Holdings Ltd.
USD ($)
Oct. 26, 2012
International Mining Machinery Holdings Ltd.
Cost of sales
USD ($)
Jun. 22, 2011
LeTourneau Technologies, Inc.
USD ($)
Oct. 25, 2013
LeTourneau Technologies, Inc.
Oct. 26, 2012
LeTourneau Technologies, Inc.
USD ($)
Oct. 28, 2011
LeTourneau Technologies, Inc.
USD ($)
Business Acquisition [Line Items]                          
Effective date of acquisition         Dec. 29, 2011           Jun. 22, 2011    
Number of shares purchased 534.8                        
Outstanding common stock acquired 41.10% 41.10% 41.10%                    
Per share price of shares purchased for acquisition     8.50                    
Number of shares purchased, value $ 584,600,000 $ 584,600,000         $ 16,200,000     $ 1,100,000,000      
Percentage of beneficial ownership interest after tender offer purchase   69.20% 69.20% 98.90%     100.00%            
Gain on preexisting interest 19,400,000 19,400,000                      
Finite-lived intangible assets acquired as part of business combination 1,160,211,000 1,160,211,000               565,388,000      
Indefinite-lived intangible assets 72,500,000                 37,200,000      
Amortized intangible assets 80,000,000                 181,200,000      
Weighted average useful life, in years 13 years 9 months 18 days                 18 years      
Inventory fair value adjustment associated with the acquisition                 20,900,000     11,500,000 7,700,000
Acquisition cost         $ 600,000 $ 15,600,000   $ 24,800,000       $ 500,000 $ 10,900,000