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Share-Based Compensation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Share-Based Compensation
Allocated Share-based Compensation Expense	$ 109	$ 115	$ 277	$ 295
Stock Options [Member]
Share-Based Compensation
Allocated Share-based Compensation Expense	86	101	224	254
Other Share-based Awards [Member]
Share-Based Compensation
Allocated Share-based Compensation Expense	$ 23	$ 14	$ 53	$ 41

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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