v2.4.0.8
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $)
In Millions, unless otherwise specified
Jun. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of assets measured on a recurring basis $ 1,763
Fair value of liabilities measured on a recurring basis 65
Short-term Investments | Equity Securities
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of assets measured on a recurring basis 399
Short-term Investments | Fixed Income Securities
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of assets measured on a recurring basis 249
Other Assets | Fixed Income Securities
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of assets measured on a recurring basis 900
Other Assets | Cross Currency Swaps and Other
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of assets measured on a recurring basis 170
Other Assets | Interest Rate Swaps
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of assets measured on a recurring basis 45
Other Liabilities | Forward Interest Rate Swaps and Other
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of liabilities measured on a recurring basis 65
Level 1
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of assets measured on a recurring basis 399 [1]
Level 1 | Short-term Investments | Equity Securities
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of assets measured on a recurring basis 399 [1]
Level 2
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of assets measured on a recurring basis 1,364 [2]
Fair value of liabilities measured on a recurring basis 65 [2]
Level 2 | Short-term Investments | Fixed Income Securities
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of assets measured on a recurring basis 249 [2]
Level 2 | Other Assets | Fixed Income Securities
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of assets measured on a recurring basis 900 [2]
Level 2 | Other Assets | Cross Currency Swaps and Other
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of assets measured on a recurring basis 170 [2]
Level 2 | Other Assets | Interest Rate Swaps
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of assets measured on a recurring basis 45 [2]
Level 2 | Other Liabilities | Forward Interest Rate Swaps and Other
  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair value of liabilities measured on a recurring basis $ 65 [2]
[1] quoted prices in active markets for identical assets or liabilities
[2] observable inputs other than quoted prices in active markets for identical assets and liabilities