v2.4.0.6

General (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 30, 2011	Nov. 30, 2010	Nov. 30, 2011	Nov. 30, 2010	Aug. 31, 2011
Business Acquisition Cost of Acquired Entity [Abstract]
Acquisition Price					$ 128
General Details [Abstract]
Dividends Payable Amount Per Share	$ 0.13		$ 0.13
Stock Based Compensation Details [Abstract]
Stock-based compensation	23	22	60	56
Treasury Shares [Abstract]
Number Of Shares Repurchased	2.8		2.8
Treasury Stock Acquired, Average Cost Per Share			$ 70
Payments for Repurchase of Common Stock			$ 197
Stock Repurchase Authorization, Remaining Number of Shares	2.9		2.9

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The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 51

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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The cash outflow to reacquire common stock during the period.

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The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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