Acquisitions - Additional Information (Detail)	12 Months Ended		12 Months Ended					12 Months Ended
	Oct. 28, 2011 USD ($)	Oct. 26, 2012 USD ($)	Oct. 26, 2012 International Mining Machinery Holdings Ltd. [Member] USD ($)	Oct. 28, 2011 International Mining Machinery Holdings Ltd. [Member] USD ($)	Dec. 29, 2011 International Mining Machinery Holdings Ltd. [Member] USD ($)	Dec. 29, 2011 International Mining Machinery Holdings Ltd. [Member] HKD	Jul. 11, 2011 International Mining Machinery Holdings Ltd. [Member]	Oct. 26, 2012 LeTourneau Technologies, Inc. [Member] USD ($)	Oct. 28, 2011 LeTourneau Technologies, Inc. [Member] 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		100.00%			69.20%	69.20%	41.10%
Per share price of shares purchased for acquisition						8.50
Number of shares purchased, value					$ 584,600,000
Percentage of beneficial ownership interest after tender offer purchase			98.90%
Actual consideration paid during the period		16,200,000
Gain on preexisting interest			19,400,000
Finite-lived intangible assets acquired as part of business combination			1,100,000,000					565,400,000
Indefinite-lived intangible assets			76,200,000
Amortized intangible assets			165,000,000					181,200,000
Weighted average useful life, in years			13 years 5 months					18 years
Inventory fair value adjustment associated with the acquisition			20,900,000					11,500,000	7,700,000
Acquisition cost	10,400,000		24,300,000	8,600,000
Unamortized trademarks								37,200,000
Net sales, Mining equipment and steel products	144,900,000
Operating income, Mining equipment and steel products	$ 23,200,000