Other Comprehensive Income Items (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Other Comprehensive Income, Before Tax
Cumulative translation adjustment	$ (29.2)	$ 13.8	$ (7.2)
Unrealized Gain (Loss) on Derivatives, Before Tax
Hedging gain (loss)	(60.5)	31.4	(55.8)
Reclassification of realized (gain) loss to net income	55.4	0.9	78.4
Net unrealized gain (loss) on derivatives	(5.1)	32.3	22.6
Total other comprehensive income (loss)	(34.3)	46.1	15.4
Unrealized Gain (Loss) on Derivatives, Tax (Expense) Credit
Hedging gain (loss)	21.4	(11.1)	19.1
Reclassification of realized loss to net income	(19.6)	(0.3)	(26.8)
Net unrealized gain on derivatives	1.8	(11.4)	(7.7)
Total other comprehensive income (loss)	1.8	(11.4)	(7.7)
Other Comprehensive Income, After Tax
Cumulative translation adjustment	(29.2)	13.8	(7.2)
Unrealized Gain (Loss) on Derivatives, After Tax
Hedging gain (loss)	(39.1)	20.3	(36.7)
Reclassification of realized (gain) loss to net income	35.8	0.6	51.6
Net unrealized gain (loss) on derivatives	(3.3)	20.9	14.9
Total other comprehensive income (loss)	$ (32.5)	$ 34.7	$ 7.7