Acquisitions - Unaudited Proforma Financial Information (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Oct. 26, 2012	Oct. 28, 2011
LeTourneau Technologies, Inc. [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired as part of business combination	$ 181,200
Net sales		4,620,059
Income from continuing operations		913,474
Basic earnings per share from continuing operations		$ 6.12
Diluted earnings per share from continuing operations		$ 6.02
LeTourneau Technologies, Inc. [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired as part of business combination	76,500
LeTourneau Technologies, Inc. [Member] \| Patent [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired as part of business combination	69,900
LeTourneau Technologies, Inc. [Member] \| Unpatented Technology [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired as part of business combination	31,600
LeTourneau Technologies, Inc. [Member] \| Backlog [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired as part of business combination	3,200
International Mining Machinery Holdings Ltd. [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired as part of business combination	165,000
Net sales	5,729,097	4,723,808
Income from continuing operations	$ 770,937	$ 632,186
Basic earnings per share from continuing operations	$ 7.28	$ 6.03
Diluted earnings per share from continuing operations	$ 7.21	$ 5.93

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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 pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, per diluted 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 acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

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

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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