Derivative Instruments and Hedging Activities (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 25, 2015	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
Gain or (Loss) Recognized in Income	$ 110	$ 49	$ 19
Tokyo Electron Limited | Foreign exchange contracts
Derivative [Line Items]
Derivative instruments not designated as hedging instruments, Loss		12
Gain or (Loss) Recognized in Income	89	42
Fair Value, Measurements, Recurring | Tokyo Electron Limited | Foreign exchange contracts
Derivative [Line Items]
Derivative assets		$ 52
Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Notional Amount	600
Loss on derivative	$ 20
Time period over which majority of after tax gain loss related to derivatives to be reclassified into earnings	10 years