Other Comprehensive Income Items (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
After-tax changes in accumulated other comprehensive income (loss)
Balance	$ 3,805.1	$ 3,431.1	$ 3,063.6
Current period activity	(68.5)	(30.2)	14.0
Balance	3,749.8	3,805.1	3,431.1
Cumulative Translation Adjustment
After-tax changes in accumulated other comprehensive income (loss)
Balance	6.0	39.5	33.2
Current period activity	(66.4)	(33.5)	6.3
Balance	(60.4)	6.0	39.5
Unrealized Gain (Loss) on Derivatives
After-tax changes in accumulated other comprehensive income (loss)
Balance	(0.6)	(3.9)	(11.6)
Current period activity	(2.1)	3.3	7.7
Balance	$ (2.7)	$ (0.6)	$ (3.9)