Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013
After-tax changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period			$ 35.6
Other comprehensive income (loss) items before reclassification			(5.9)
Amounts reclassified from accumulated other comprehensive income			8.7
Net current period other comprehensive income (loss)	(0.3)	(6.4)	2.8	(3.8)
Balance at the end of the period	38.4	17.8	38.4	17.8
Cumulative Translation Adjustment
After-tax changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period			39.5
Other comprehensive income (loss) items before reclassification			(1.4)
Net current period other comprehensive income (loss)			(1.4)
Balance at the end of the period	38.1		38.1
Unrealized Gain (Loss) on Derivatives
After-tax changes in accumulated other comprehensive income (loss)
Balance at the beginning of the period			(3.9)
Other comprehensive income (loss) items before reclassification			(4.5)
Amounts reclassified from accumulated other comprehensive income			8.7
Net current period other comprehensive income (loss)			4.2
Balance at the end of the period	$ 0.3		$ 0.3