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Share-Based Compensation and Savings Plans (Schedule of Total Share-Based Compensation Expense by Type of Award) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Share-based compensation (income)/expense $ 93 $ 85 $ 80
Restricted Shares and Share Units
     
Share-based compensation (income)/expense 60 55 52
Stock Options
     
Share-based compensation (income)/expense 23 25 26
Performance Share Units
     
Share-based compensation (income)/expense 10 6 0
Stock Appreciation Rights
     
Share-based compensation (income)/expense $ 0 $ (1) $ 2