Other Comprehensive Income and Related Income Tax Effects (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Net Unrealized Gains (Losses) on Derivatives
Unrealized gains (losses), net of tax effects of $127, $(340), and $188	$ 236	$ (632)	$ 349
Reclassification adjustment for losses (gains) included in net income, net of tax effects of $10, $2, and $(173)	19	5	(322)
Net unrealized gains (losses) on derivatives	255	(627)	27
Net Unrealized Gains (Losses) on Investments
Unrealized gains (losses), net of tax effects of $(93), $726, and $263	(172)	1,349	488
Reclassification adjustment for gains included in net income, net of tax effects of $(117), $(159), and $(120)	(218)	(295)	(223)
Net unrealized gains (losses) on investments	(390)	1,054	265
Translation adjustments and other, net of tax effects of $(165), $205 and $(103)	(306)	381	(206)
Other comprehensive income (loss)	$ (441)	$ 808	$ 86

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