Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $) | Mar. 31, 2015 |
In Millions, unless otherwise specified |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair value of assets measured on a recurring basis | $1,823 | |
Fair value of liabilities measured on a recurring basis | 1,756 | |
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 | 298 | |
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 Current 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 | 250 | |
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 | 915 | |
Other Assets | Interest Rate 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 | 111 | |
Other Current Liabilities | Cross Currency Swap and Other | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair value of liabilities measured on a recurring basis | 137 | |
Other Liabilities | Forward Interest Rate Swaps | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair value of liabilities measured on a recurring basis | 301 | |
Other Liabilities | Cross Currency Swaps | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair value of liabilities measured on a recurring basis | 1,318 | |
Level 1 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair value of assets measured on a recurring basis | 554 | [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 | 298 | [1] |
Level 1 | 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 | 6 | [1] |
Level 1 | Other Current 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 | 250 | [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 | 1,269 | [2] |
Fair value of liabilities measured on a recurring basis | 1,756 | [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 | 243 | [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 | 915 | [2] |
Level 2 | Other Assets | Interest Rate 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 | 111 | [2] |
Level 2 | Other Current Liabilities | Cross Currency Swap and Other | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair value of liabilities measured on a recurring basis | 137 | [2] |
Level 2 | Other Liabilities | Forward Interest Rate Swaps | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair value of liabilities measured on a recurring basis | 301 | [2] |
Level 2 | Other Liabilities | Cross Currency Swaps | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Fair value of liabilities measured on a recurring basis | $1,318 | [2] |
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[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 |