v2.4.0.8
Reconciliation of Total Assets Measured at Fair Value on Recurring Basis to Balance Sheet Presentation (Detail) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2014
Jun. 30, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Net fair value of assets measured at fair value on a recurring basis $ 92,164 $ 84,468
Other (6) (7)
Recorded basis of investment components 98,770 [1] 87,866 [1]
Other Current Assets
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Less derivative net assets classified as other current assets (38) (213)
Fair Value, Measurements, Recurring
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash 4,980 1,967
Fair Value, Measurements, Nonrecurring
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Common and preferred stock measured at fair value on a nonrecurring basis 520 395
Other investments measured at fair value on a nonrecurring basis $ 1,150 $ 1,256
[1] Excludes held-to-maturity investments recorded at amortized cost and measured at fair value on a nonrecurring basis.