Other Comprehensive Income (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Other Comprehensive Income (Loss), Before Tax
Cumulative translation adjustment	$ 9.8	$ (7.2)	$ 0.7	$ (1.3)
Net unrealized gain on derivatives	0.5	2.1	3.7	6.0
Total other comprehensive income (loss)	10.3	(5.1)	4.4	4.7
Other Comprehensive Income (Loss), Tax (Expense) Credit
Net unrealized gain on derivatives	(0.2)	(0.7)	(1.3)	(2.1)
Total other comprehensive income (loss)	(0.2)	(0.7)	(1.3)	(2.1)
Other Comprehensive Income (Loss), After Tax
Cumulative translation adjustment	9.8	(7.2)	0.7	(1.3)
Net unrealized gain on derivatives	0.3	1.4	2.4	3.9
Other comprehensive income (loss), net of income taxes	$ 10.1	$ (5.8)	$ 3.1	$ 2.6