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Estimated Future Amortization Expense Related to Intangible Assets (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Jun. 30, 2012
Finite-Lived Intangible Assets [Line Items]    
2013 (excluding the nine months ended March 31, 2013) $ 170  
Year Ending June 30, 2014 613  
Year Ending June 30, 2015 473  
Year Ending June 30, 2016 389  
Year Ending June 30, 2017 277  
Thereafter 1,318  
Net Carrying Amount $ 3,240 $ 3,170