Special Charges (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Feb. 28, 2014	Nov. 30, 2013
Total plan expenses [Member]
Special Charges [Line Items]
Special charges liability	$ 16.1	$ 18.6
Special charges utilized	(2.5)
Special charges	27.0
2013 Special Charges [Member]
Special Charges [Line Items]
Special charges		25.0
2014 Expected Special Charges [Member]
Special Charges [Line Items]
Special charges	2.0
Employee Severance Charges [Member]
Special Charges [Line Items]
Special charges liability	14.1	15.9
Special charges utilized	(1.8)
Special charges		15.9
Asset Impairment [Member]
Special Charges [Line Items]
Special charges		6.4
Other exit costs [Member]
Special Charges [Line Items]
Special charges liability	2.0	2.7
Special charges utilized	(0.7)
Special charges		2.7
Cash Expenditures [Member]
Special Charges [Line Items]
Special charges	18.0
Annual Cost Savings [Member]
Special Charges [Line Items]
Special charges	$ 10.0