Other Comprehensive Income (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013
Other comprehensive income (loss), before tax
Cumulative translation adjustment, before tax	$ (2.1)	$ (9.4)	$ (1.4)	$ (10.7)
Net unrealized gain (loss) on derivatives, before tax
Unrealized hedging gain (loss), before tax	0.8	10.6	(6.9)	13.3
Net unrealized gain (loss) on derivatives, before tax	2.8	4.6	6.5	10.6
Total other comprehensive income (loss), before tax	0.7	(4.8)	5.1	(0.1)
Net unrealized gain (loss) on derivatives, tax (expense) credit
Unrealized hedging gain (loss), tax (expense) credit	(0.3)	(3.7)	2.4	(4.6)
Net unrealized gain on derivatives, tax (expense) credit	(1.0)	(1.6)	(2.3)	(3.7)
Total other comprehensive income (loss), tax (expense) credit	(1.0)	(1.6)	(2.3)	(3.7)
Other comprehensive income (loss), after tax
Cumulative translation adjustment, after tax	(2.1)	(9.4)	(1.4)	(10.7)
Unrealized gain (loss) on derivatives, after tax
Unrealized hedging gain (loss), after tax	0.5	6.9	(4.5)	8.7
Net unrealized gain on derivatives, after tax	1.8	3.0	4.2	6.9
Other comprehensive income (loss), net of income taxes	(0.3)	(6.4)	2.8	(3.8)
Interest rate contracts | Interest expense
Net unrealized gain (loss) on derivatives, before tax
Reclassification of realized (gain) loss to, before tax	2.0	4.6	7.9	13.7
Net unrealized gain (loss) on derivatives, tax (expense) credit
Reclassification of realized (gain) loss to, tax expense (credit)	(0.7)	(1.6)	(2.8)	(4.8)
Unrealized gain (loss) on derivatives, after tax
Reclassification of realized (gain) loss to, after tax	1.3	(3.0)	5.1	8.9
Foreign exchange contracts | Administrative and operating expenses
Net unrealized gain (loss) on derivatives, before tax
Reclassification of realized (gain) loss to, before tax		(10.6)	5.5	(16.4)
Net unrealized gain (loss) on derivatives, tax (expense) credit
Reclassification of realized (gain) loss to, tax expense (credit)		3.7	(1.9)	5.7
Unrealized gain (loss) on derivatives, after tax
Reclassification of realized (gain) loss to, after tax		$ (6.9)	$ 3.6	$ (10.7)