Derivative Instruments and Hedging Activities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended	3 Months Ended	12 Months Ended
Oct. 26, 2014	Oct. 26, 2014	Oct. 27, 2013
Derivative [Line Items]
Time period for hedging of foreign currency transactions	24 months
Time period over which majority of after tax gain loss related to derivatives to be reclassified into earnings	12 months
Tokyo Electron Limited [Member] \| Foreign exchange contracts [Member]
Derivative [Line Items]
Derivative instruments not designated as hedging instruments, Loss		$ 12	$ 7
Fair Value, Measurements, Recurring [Member] \| Estimate of Fair Value Measurement [Member] \| Tokyo Electron Limited [Member] \| Foreign exchange contracts [Member]
Derivative [Line Items]
Derivative assets	52	52	17
Gain on sale of derivatives	42	$ 51

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Estimated period for the anticipated transfer of gain (loss), net, from accumulated other comprehensive income into earnings, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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Maximum period of time the entity is hedging its exposure to variability in future cash flows for forecasted transactions, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes forecasted transactions related to payment of variable interest on existing financial instruments.

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