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Goodwill and Other Intangible Assets (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Goodwill and Intangible Assets        
Amortization of Intangible Assets $ 46 $ 23 $ 92 $ 44
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 92   92  
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 157   157  
Finite-Lived Intangible Assets, Amortization Expense, Year Two 143   143  
Finite-Lived Intangible Assets, Amortization Expense, Year Three 131   131  
Finite-Lived Intangible Assets, Amortization Expense, Year Four $ 95   $ 95  
Minimum
        
Goodwill and Intangible Assets        
Finite-Lived Intangible Asset, Useful Life     1 year  
Maximum
        
Goodwill and Intangible Assets        
Finite-Lived Intangible Asset, Useful Life     20 years