Accumulated Other Comprehensive Income-Components of Accumulated Other Comprehensive Income, Net of Tax (Details) (USD $) In Millions, unless otherwise specified	May 31, 2013	Nov. 30, 2012	May 31, 2012
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustment	$ 120.6	$ 166.3	$ 105.4
Unrealized gain (loss) on foreign currency exchange contracts	0.3	(1.6)	0.8
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	4.3
Unamoritzed value of settled interest rate swaps	(4.9)	(4.1)	(4.9)
Pension and other postretirement costs	(304.5)	(320.5)	(228.6)
Accumulated other comprehensive income	$ (184.2)	$ (159.9)	$ (127.3)