Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 75.8	$ 51.7
Other comprehensive income (loss):
Foreign currency translation adjustment	28.2	(113.8)
Comprehensive income (loss)	104.0	(62.1)
Less: comprehensive loss attributable to noncontrolling interests	0.0	0.1
Comprehensive income (loss) attributable to Cooper stockholders	$ 104.0	$ (62.0)