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Derivatives - Additional Information (Detail) (USD $)
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12 Months Ended | ||||||||||||||||||||||||||||
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Jun. 30, 2014
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Jun. 30, 2014
Derivatives Sold
Equity Contracts
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Jun. 30, 2013
Derivatives Sold
Equity Contracts
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Jun. 30, 2014
Derivatives Sold
Designated Hedge Derivatives
Equity Contracts
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Jun. 30, 2014
Derivatives Sold
Non-designated Hedge Derivatives
Foreign Exchange Contracts
|
Jun. 30, 2013
Derivatives Sold
Non-designated Hedge Derivatives
Foreign Exchange Contracts
|
Jun. 30, 2014
Derivatives Sold
Non-designated Hedge Derivatives
Interest Rate Contracts
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Jun. 30, 2013
Derivatives Sold
Non-designated Hedge Derivatives
Interest Rate Contracts
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Jun. 30, 2014
Derivatives Sold
Non-designated Hedge Derivatives
Credit Contracts
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Jun. 30, 2013
Derivatives Sold
Non-designated Hedge Derivatives
Credit Contracts
|
Jun. 30, 2014
Derivatives Sold
Non-designated Hedge Derivatives
Commodity Contracts
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Jun. 30, 2013
Derivatives Sold
Non-designated Hedge Derivatives
Commodity Contracts
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Jun. 30, 2014
Derivatives Sold
Cash flow hedging
Foreign Exchange Contracts
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Jun. 30, 2013
Derivatives Sold
Cash flow hedging
Foreign Exchange Contracts
|
Jun. 30, 2014
Derivatives Sold
Foreign Exchange Forward
Foreign Exchange Contracts
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Jun. 30, 2013
Derivatives Sold
Foreign Exchange Forward
Foreign Exchange Contracts
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Jun. 30, 2014
Derivatives Purchased
Equity Contracts
|
Jun. 30, 2013
Derivatives Purchased
Equity Contracts
|
Jun. 30, 2014
Derivatives Purchased
Designated Hedge Derivatives
Equity Contracts
|
Jun. 30, 2014
Derivatives Purchased
Non-designated Hedge Derivatives
Foreign Exchange Contracts
|
Jun. 30, 2013
Derivatives Purchased
Non-designated Hedge Derivatives
Foreign Exchange Contracts
|
Jun. 30, 2014
Derivatives Purchased
Non-designated Hedge Derivatives
Interest Rate Contracts
|
Jun. 30, 2013
Derivatives Purchased
Non-designated Hedge Derivatives
Interest Rate Contracts
|
Jun. 30, 2014
Derivatives Purchased
Non-designated Hedge Derivatives
Mortgage-backed securities
|
Jun. 30, 2013
Derivatives Purchased
Non-designated Hedge Derivatives
Mortgage-backed securities
|
Jun. 30, 2014
Derivatives Purchased
Non-designated Hedge Derivatives
Credit Contracts
|
Jun. 30, 2013
Derivatives Purchased
Non-designated Hedge Derivatives
Credit Contracts
|
Jun. 30, 2014
Derivatives Purchased
Non-designated Hedge Derivatives
Commodity Contracts
|
Jun. 30, 2013
Derivatives Purchased
Non-designated Hedge Derivatives
Commodity Contracts
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| Derivative [Line Items] | |||||||||||||||||||||||||||||
| Maximum length of time hedged in cash flow hedge | 3 years | ||||||||||||||||||||||||||||
| Notional amounts | $ 2,100,000,000 | $ 1,000,000,000 | $ 420,000,000 | $ 8,500,000,000 | $ 7,900,000,000 | $ 741,000,000 | $ 809,000,000 | $ 440,000,000 | $ 501,000,000 | $ 408,000,000 | $ 249,000,000 | $ 4,900,000,000 | $ 5,100,000,000 | $ 3,100,000,000 | $ 407,000,000 | $ 3,100,000,000 | $ 898,000,000 | $ 362,000,000 | $ 6,200,000,000 | $ 5,000,000,000 | $ 503,000,000 | $ 1,100,000,000 | $ 1,100,000,000 | $ 1,200,000,000 | $ 412,000,000 | $ 377,000,000 | $ 1,400,000,000 | $ 1,200,000,000 | |
| Minimum required liquidity under certain counterparty agreements | 1,000,000,000 | ||||||||||||||||||||||||||||
| Long-term unsecured debt rating | AAA | ||||||||||||||||||||||||||||
| Minimum liquidity for the period as defined by certain counterparty agreements | 1,000,000,000 | ||||||||||||||||||||||||||||
| Estimated derivative net gains (losses) included in AOCI that will be reclassified into earnings within 12 months | $ 32,000,000 | ||||||||||||||||||||||||||||