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Risk Management Activities and Fair Value Measurements - Notional Amounts and Fair Values of Qualifying and Non-Qualifying Financial Instruments used in Hedging Transactions (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2011
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Jun. 30, 2011
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|---|---|---|
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Derivatives in Cash Flow Hedging Relationships
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| Notional amount | $ 858 | $ 847 |
| Fair Value Asset (Liability) | (168) | (114) |
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Derivatives in Cash Flow Hedging Relationships | Interest Rate
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| Notional amount | 0 | 0 |
| Fair Value Asset (Liability) | 0 | 0 |
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Derivatives in Cash Flow Hedging Relationships | Foreign currency hedges
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| Notional amount | 831 | 831 |
| Fair Value Asset (Liability) | (169) | (118) |
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Derivatives in Cash Flow Hedging Relationships | Commodities
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| Notional amount | 27 | 16 |
| Fair Value Asset (Liability) | 1 | 4 |
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Derivatives in Fair Value Hedging Relationships | Interest Rate
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| Notional amount | 8,852 | 10,308 |
| Fair Value Asset (Liability) | 275 | 163 |
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Derivatives in Net Investment Hedging Relationships
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| Notional amount | 1,809 | 1,540 |
| Fair Value Asset (Liability) | (64) | (138) |
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Derivatives Not Designated as Hedging Instruments
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| Notional amount | 13,827 | 14,996 |
| Fair Value Asset (Liability) | (242) | 138 |
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Derivatives Not Designated as Hedging Instruments | Foreign currency hedges
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| Notional amount | 13,811 | 14,957 |
| Fair Value Asset (Liability) | (242) | 139 |
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Derivatives Not Designated as Hedging Instruments | Commodities
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| Notional amount | 16 | 39 |
| Fair Value Asset (Liability) | $ 0 | $ (1) |