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Estimated Future Amortization Expense Related to Intangible Assets (Detail) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Jun. 30, 2012
Expected Amortization Expense [Line Items]    
Year Ending June 30, 2013 (excluding the three months ended September 30, 2012) $ 519  
Year Ending June 30, 2014 553  
Year Ending June 30, 2015 469  
Year Ending June 30, 2016 361  
Year Ending June 30, 2017 257  
Thereafter 1,264  
Net Carrying Amount $ 3,423 $ 3,170