Accumulated Other Comprehensive Income-Components of Accumulated Other Comprehensive Income, Net of Tax (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Aug. 31, 2014		Aug. 31, 2013		Aug. 31, 2014		Aug. 31, 2013		Nov. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	$ (0.3)		$ 0		$ (0.9)		$ (1.4)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	0.1		0		0.3		0.4
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(0.2)		0		(0.6)		(1.0)
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax	0.1	[1]	(0.2)	[1]	0.3	[1]	(0.6)	[1]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax	4.2	[1]	9.0	[1]	12.4	[1]	27.3	[1]
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax	4.3		8.8		12.7		26.7
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net (Gain) Loss, Tax	(1.4)		(3.0)		(4.3)		(9.1)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net (Gain) Loss, Net of Tax	2.9		5.8		8.4		17.6
Foreign currency translation adjustment	126.8		112.7		126.8		112.7		165.7
Unrealized gain (loss) on foreign currency exchange contracts	0.3		0.4		0.3		0.4		(0.3)
Unamoritzed value of settled interest rate swaps	2.4		2.4		2.4		2.4		2.0
Pension and other postretirement costs	(159.1)		(299.1)		(159.1)		(299.1)		(167.7)
Accumulated other comprehensive income	(29.6)		(183.6)		(29.6)		(183.6)		(0.3)
Cash Flow Hedging [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(0.3)		0		(0.9)		(1.4)
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member] | Cost of Sales [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(0.3)		0.3		(0.8)		(0.4)
Interest Rate Contract [Member] | Cash Flow Hedging [Member] | Interest Expense [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ 0		$ (0.3)		$ (0.1)		$ (1.0)

[1] This accumulated other comprehensive income (loss) component is included in the computation of total pension expense and total other postretirement expense (refer to note 6 for additional details).