Intangible Assets and Goodwill - Methodology used to Value Licenses (Detail)	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
Minimum
Goodwill And Other Intangibles [Line Items]
Discount Rate	12.00%	12.10%	12.00%
Long-term Revenue Growth Rate	1.30%	1.50%	2.30%
Mature Market Share	3.20%	3.20%	3.50%
Operating Profit Margin	25.00%	25.10%	25.00%
Maximum
Goodwill And Other Intangibles [Line Items]
Discount Rate	12.40%	12.50%	12.40%
Long-term Revenue Growth Rate	2.50%	3.00%	3.10%
Mature Market Share	29.30%	29.20%	30.20%
Operating Profit Margin	39.10%	39.20%	39.10%