Intangible Assets and Goodwill - Methodology used to Value Licenses (Detail)	12 Months Ended
Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012
Minimum
Goodwill And Other Intangibles [Line Items]
Discount Rate	12.10%	12.00%	11.90%
Long-term Revenue Growth Rate	1.50%	2.30%	2.30%
Mature Market Share	3.20%	3.50%	3.20%
Operating Profit Margin	25.10%	25.00%	25.10%
Maximum
Goodwill And Other Intangibles [Line Items]
Discount Rate	12.50%	12.40%	12.30%
Long-term Revenue Growth Rate	3.00%	3.10%	3.30%
Mature Market Share	29.20%	30.20%	29.40%
Operating Profit Margin	39.20%	39.10%	38.30%

Fair Value Inputs Market Share Range

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Long-term pre-tax operating income as a percentage of net sales, used as an input to measure fair value.

+ References

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- Definition

Percentage of assumed long-term growth in revenues, used as an input to measure fair value.

+ References

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