Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions	12 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Accumulated other comprehensive income
Balance of Accumulated Other Comprehensive Income (Loss) at beginning of period	$ (899)
Net of tax amount	1,075	(544)	(1,312)
Balance of Accumulated Other Comprehensive Income (Loss) at End of period	176	(899)
Accumulated Other Comprehensive Income (Loss).
Accumulated other comprehensive income
Balance of Accumulated Other Comprehensive Income (Loss) at beginning of period	(899)	(355)	957
Unrealized gains (losses)	1,181	(597)	(1,460)
(Gains) losses reclassified to earnings	11	71	(112)
Tax effect	(117)	(18)	260
Net of tax amount	1,075	(544)	(1,312)
Balance of Accumulated Other Comprehensive Income (Loss) at End of period	176	(899)	(355)
Foreign Currency Translation Adjustment
Accumulated other comprehensive income
Balance of Accumulated Other Comprehensive Income (Loss) at beginning of period	(350)	207	1,026
Unrealized gains (losses)	859	(557)	(819)
Net of tax amount	859	(557)	(819)
Balance of Accumulated Other Comprehensive Income (Loss) at End of period	509	(350)	207
Deferred Gain (Loss) on Hedging Activities
Accumulated other comprehensive income
Balance of Accumulated Other Comprehensive Income (Loss) at beginning of period	30	(13)	90
Unrealized gains (losses)	43	46	(24)
(Gains) losses reclassified to earnings	(46)	24	(126)
Tax effect	2	(27)	47
Net of tax amount	(1)	43	(103)
Balance of Accumulated Other Comprehensive Income (Loss) at End of period	29	30	(13)
Pension Liability Adjustment
Accumulated other comprehensive income
Balance of Accumulated Other Comprehensive Income (Loss) at beginning of period	(613)	(556)	(179)
Unrealized gains (losses)	230	(123)	(591)
(Gains) losses reclassified to earnings	70	41	8
Tax effect	(106)	25	206
Net of tax amount	194	(57)	(377)
Balance of Accumulated Other Comprehensive Income (Loss) at End of period	(419)	(613)	(556)
Unrealized Gain (Loss) On Investments
Accumulated other comprehensive income
Balance of Accumulated Other Comprehensive Income (Loss) at beginning of period	34	7	20
Unrealized gains (losses)	49	37	(26)
(Gains) losses reclassified to earnings	(13)	6	6
Tax effect	(13)	(16)	7
Net of tax amount	23	27	(13)
Balance of Accumulated Other Comprehensive Income (Loss) at End of period	$ 57	$ 34	$ 7