Fair Value Measurements (Quantitative Information about Unobservable Inputs, Liabilities) (Details) (Contingent Consideration [Member])	6 Months Ended
	May 31, 2014
Rollbase [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration, discount rate	4.80%
Rollbase [Member] | Minimum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Probability milestones associated with contingent consideration will be achieved	95.00%
Modulus [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration, discount rate	33.00%
Modulus [Member] | Minimum [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Probability milestones associated with contingent consideration will be achieved	75.00%