Financial Instruments, Fair Value and Risk Management - Schedule of Fair Values and Carrying Values of Long-term Debt (Details) - USD ($) $ in Millions	Jul. 31, 2016	Oct. 31, 2015
Fair Value
Liabilities:
Long-term debt, including current portion	$ 2,756.8	$ 2,675.8
Fair Value | Level 1
Liabilities:
Long-term debt, including current portion	0.0	0.0
Fair Value | Level 2
Liabilities:
Long-term debt, including current portion	2,756.8	2,675.8
Fair Value | Level 3
Liabilities:
Long-term debt, including current portion	0.0	0.0
Carrying Value
Liabilities:
Long-term debt, including current portion	$ 2,712.8	$ 2,667.9