Components of Other Income (Expense) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Components of Other Income (Expense) [Line Items]
Dividends and interest income	$ 150	$ 180	$ 475	$ 573
Interest expense	(109)	(95)	(309)	(284)
Net recognized gains on investments	57	34	85	352
Net losses on derivatives	(5)	(102)	(66)	(278)
Net losses on foreign currency remeasurements	(22)	(8)	(58)	(52)
Other	(80)	(20)	89	26
Total	$ (9)	$ (11)	$ 216	$ 337