Summary of Changes in Accumulated Other Comprehensive Income by Component (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning of period	$ 1,743	$ 1,422
Translation adjustments and other, net of tax effects of $12, $(8) and $(165)	263	(16)	(306)
Net current period other comprehensive income (loss)	(35)	(26)	255
Net current period other comprehensive income (loss)	1,737	363	(390)
Accumulated other comprehensive income (loss), end of period	3,708	1,743	1,422
Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning of period	66	92	(163)
Unrealized gains (losses), net of tax effects of $2, $54 and $127	63	101	236
Tax expense (benefit) included in provision for income taxes	6	68	(10)
Amounts reclassified from accumulated other comprehensive income	(98)	(127)	19
Net current period other comprehensive income (loss)	(35)	(26)	255
Accumulated other comprehensive income (loss), end of period	31	66	92
Derivatives \| Revenue
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification adjustments for losses (gains) included in revenue	(104)	(195)	29
Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning of period	1,794	1,431	1,821
Unrealized gains (losses), net of tax effects of $1,067, $244 and $(93)	2,053	453	(172)
Tax expense included in provision for income taxes	131	49	117
Amounts reclassified from accumulated other comprehensive income	(316)	(90)	(218)
Net current period other comprehensive income (loss)	1,737	363	(390)
Accumulated other comprehensive income (loss), end of period	3,531	1,794	1,431
Investments \| Other income (expense)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification adjustments for gains included in other income (expense)	(447)	(139)	(335)
Translation Adjustments and Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning of period	(117)	(101)	205
Translation adjustments and other, net of tax effects of $12, $(8) and $(165)	263	(16)	(306)
Accumulated other comprehensive income (loss), end of period	$ 146	$ (117)	$ (101)

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount before tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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