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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Aggregate number of common shares reserved for future issuance.

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Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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Note 14 - Stock-based Compensation (Details) (USD $)	3 Months Ended			6 Months Ended		12 Months Ended	3 Months Ended	1 Months Ended	0 Months Ended
Note 14 - Stock-based Compensation (Details) (USD $)	Feb. 28, 2015	Nov. 30, 2014	Feb. 28, 2014	Feb. 28, 2015	Feb. 28, 2014	Aug. 31, 2014	Nov. 30, 2013	Jul. 31, 2012	Jan. 15, 2015	Jan. 15, 2014	Dec. 16, 2014
Note 14 - Stock-based Compensation (Details) [Line Items]
Allocated Share-based Compensation Expense (in Dollars)	$ 5,800,000		$ 5,500,000	$ 11,000,000	$ 10,600,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)	63,400,000			63,400,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition				3 years 6 months
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount (in Dollars)				0		0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)		463,000
Granted, weighted average exercise price per share		$ 131.31
Common Stock, Capital Shares Reserved for Future Issuance (in Shares)											500,000
Non-performance Based [Member]
Note 14 - Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)	25,075	462,913	138,902				35,508
Granted, weighted average exercise price per share	$ 139.02	$ 131.31
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 37.67
Performance Shares [Member]
Note 14 - Stock-based Compensation (Details) [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)	800,000			800,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition				2 years 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)	137,522		165,949				36,695	241,546
Granted, weighted average exercise price per share	$ 148.52
Performance and Non-performance [Member]
Note 14 - Stock-based Compensation (Details) [Line Items]
Granted, weighted average exercise price per share	$ 147.05		$ 106.03				109.49
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 43.05		$ 29.14				31.78
Restricted Stock [Member]
Note 14 - Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)	38,000	10,000		48,313	204,124
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 137.83	$ 127.58		$ 135.66	$ 101.95
Non-Employee Directors' Stock Option Plan [Member]
Note 14 - Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)									13,842	14,424
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value									$ 28.18	$ 27.04
Common Stock, Capital Shares Reserved for Future Issuance (in Shares)	250,000			250,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)	88,590			88,590
2008 Employee Stock Purchase Plan [Member]
Note 14 - Stock-based Compensation (Details) [Line Items]
Allocated Share-based Compensation Expense (in Dollars)	$ 400,000		$ 300,000
Granted, weighted average exercise price per share	$ 116.95		$ 89.50	$ 113.12	$ 88.22
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 22.37		$ 19.04	$ 21.67	$ 17.96
Common Stock, Capital Shares Reserved for Future Issuance (in Shares)	511,673			511,673
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in Shares)	17,811		20,166	33,208	36,529