Restructuring Reserve by Type of Costs (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Sep. 30, 2013	Jun. 30, 2013
Restructuring Reserve [Roll Forward]
Reserve June 30, 2013	$ 323
Charges	129	2,000
Cash Spent	(67)
Charges Against Assets	(53)
Reserve September 30, 2013	332	323
Employee severance
Restructuring Reserve [Roll Forward]
Charges		1,000
Separations
Restructuring Reserve [Roll Forward]
Reserve June 30, 2013	296
Charges	53
Cash Spent	(37)
Charges Against Assets	0
Reserve September 30, 2013	312
Asset-Related Costs
Restructuring Reserve [Roll Forward]
Reserve June 30, 2013	0
Charges	53	487
Cash Spent	0
Charges Against Assets	(53)
Reserve September 30, 2013	0	0
Other Costs
Restructuring Reserve [Roll Forward]
Reserve June 30, 2013	27
Charges	23	431
Cash Spent	(30)
Charges Against Assets	0
Reserve September 30, 2013	$ 20	$ 27