Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (122.5)	$ 75.8
Other comprehensive income:
Foreign currency translation adjustment	102.3	28.2
Comprehensive (loss) income attributable to Cooper stockholders	$ (20.2)	$ 104.0