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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect per basic share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Acquisitions - Unaudited Proforma Financial Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended					12 Months Ended
	Oct. 26, 2012 International Mining Machinery Holdings Ltd.	Oct. 28, 2011 International Mining Machinery Holdings Ltd.	Dec. 29, 2011 International Mining Machinery Holdings Ltd.	Dec. 29, 2011 International Mining Machinery Holdings Ltd. Customer relationships	Dec. 29, 2011 International Mining Machinery Holdings Ltd. Backlog	Oct. 28, 2011 LeTourneau Technologies, Inc.	Jun. 22, 2011 LeTourneau Technologies, Inc.	Jun. 22, 2011 LeTourneau Technologies, Inc. Customer relationships	Jun. 22, 2011 LeTourneau Technologies, Inc. Patents	Jun. 22, 2011 LeTourneau Technologies, Inc. Unpatented technology	Jun. 22, 2011 LeTourneau Technologies, Inc. Backlog
Business Acquisition [Line Items]
Finite-lived intangible assets acquired as part of business combination			$ 80,000	$ 77,300	$ 2,700		$ 181,200	$ 76,500	$ 69,900	$ 31,600	$ 3,200
Net sales	5,729,097	4,723,808				4,620,059
Income from continuing operations	$ 770,921	$ 621,894				$ 913,474
Basic earnings per share from continuing operations (in dollars per share)	$ 7.28	$ 5.93				$ 6.12
Diluted earnings per share from continuing operations (in dollars per share)	$ 7.21	$ 5.84				$ 6.02