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SUBSEQUENT EVENTS	3 Months Ended
SUBSEQUENT EVENTS	Jan. 31, 2016
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS On January 19, 2016, a wholly-owned subsidiary of Ciena Corporation entered into a definitive agreement with TeraXion, Inc. and its wholly-owned subsidiary to acquire certain high-speed photonics components (HSPC) assets for approximately $32 million in cash. The asset purchase includes, among other things, TeraXion’s high-speed indium phosphide and silicon photonics technologies, as well as certain underlying intellectual property. Ciena completed its acquisition of these assets on February 1, 2016.