Employee Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended	3 Months Ended		6 Months Ended
	May 31, 2014	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Pension Plans
Employee Benefit Plans (Details) [Line Items]
Pension Contributions	$ 1.4
Other Pension Plan, Defined Benefit
Employee Benefit Plans (Details) [Line Items]
Benefit cost of settlement event		3.7	0	3.7	0
United States Pension Plan
Employee Benefit Plans (Details) [Line Items]
Pension Contributions				0
United Kingdom Pension Plan
Employee Benefit Plans (Details) [Line Items]
Pension Contributions				$ 0.7