Other Comprehensive Income Items (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Other comprehensive income (loss), before tax
Cumulative translation adjustment, before tax	$ 2.5	$ 9.8	$ (45.8)	$ 0.7
Unrealized gain (loss) on derivatives, before tax
Unrealized hedging gain (loss), before tax	(0.3)	(1.8)	(3.9)	(7.7)
Net unrealized gain (loss) on derivatives, before tax	1.5	0.5		3.7
Total other comprehensive income (loss), before tax	4.0	10.3	(45.8)	4.4
Unrealized gain (loss) on derivatives, tax (expense) credit
Unrealized hedging gain (loss), tax (expense) credit	0.1	0.6	1.4	2.7
Net unrealized gain (loss) on derivatives, tax (expense) credit	(0.5)	(0.2)		(1.3)
Total other comprehensive income (loss), tax (expense) credit	(0.5)us-gaap_OtherComprehensiveIncomeLossTax	(0.2)us-gaap_OtherComprehensiveIncomeLossTax		(1.3)us-gaap_OtherComprehensiveIncomeLossTax
Other comprehensive income (loss), after tax
Cumulative translation adjustment, after tax	2.5	9.8	(45.8)	0.7
Unrealized gain (loss) on derivatives, after tax
Unrealized hedging gain (loss), after tax	(0.2)	(1.2)	(2.5)	(5.0)
Net unrealized gain (loss) on derivatives, after tax	1.0	0.3		2.4
Other comprehensive income (loss), net of income taxes	3.5	10.1	(45.8)	3.1
Interest rate contracts \| Interest expense
Unrealized gain (loss) on derivatives, before tax
Reclassification of realized (gain) loss, before tax	1.8	2.3	3.9	5.9
Unrealized gain (loss) on derivatives, tax (expense) credit
Reclassification of realized (gain) loss, tax expense (credit)	(0.6)	(0.8)	(1.4)	(2.1)
Unrealized gain (loss) on derivatives, after tax
Reclassification of realized (gain) loss, after tax	1.2	1.5	2.5	3.8
Foreign exchange contracts \| Administrative and operating expenses
Unrealized gain (loss) on derivatives, before tax
Reclassification of realized (gain) loss, before tax				5.5
Unrealized gain (loss) on derivatives, tax (expense) credit
Reclassification of realized (gain) loss, tax expense (credit)				(1.9)
Unrealized gain (loss) on derivatives, after tax
Reclassification of realized (gain) loss, after tax				$ 3.6

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