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Share-Based Compensation (Schedule of Additional Data Related to Stock Option Activity) (Details) (Stock Options, USD $)
In Millions, unless otherwise specified
9 Months Ended 12 Months Ended
Mar. 31, 2014
Jun. 30, 2013
Stock Options
   
Aggregate intrinsic value of outstanding options at period end, Stock Options $ 308 $ 156
Aggregate intrinsic value of exercisable options at period end, Stock Options $ 202 $ 113
Weighted-average remaining contractual life of outstanding options (in years) 6 years 4 years
Weighted-average remaining contractual life of exercisable options (in years) 4 years 3 years