POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - FAIR VALUE OF PLAN ASETS (DETAILS) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2010
Pension Benefits
Fair value of plan assets	$ 7,974	[1]	$ 7,962	[1]	$ 6,562	[1]
Pension Benefits | Fair Value, Inputs, Level 1
Fair value of plan assets	64		268
Pension Benefits | Fair Value, Inputs, Level 2
Fair value of plan assets	7,839		7,639
Pension Benefits | Fair Value, Inputs, Level 3
Fair value of plan assets	71		55
Pension Benefits | Cash and Cash Equivalents
Fair value of plan assets	60		189
Pension Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 1
Fair value of plan assets	60		189
Pension Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 2
Fair value of plan assets	0		0
Pension Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 3
Fair value of plan assets	0		0
Pension Benefits | Government Bonds
Fair value of plan assets	4		68
Pension Benefits | Government Bonds | Fair Value, Inputs, Level 1
Fair value of plan assets	4		68
Pension Benefits | Government Bonds | Fair Value, Inputs, Level 2
Fair value of plan assets	0		0
Pension Benefits | Government Bonds | Fair Value, Inputs, Level 3
Fair value of plan assets	0		0
Pension Benefits | Company Stock
Fair value of plan assets	0		11
Pension Benefits | Company Stock | Fair Value, Inputs, Level 1
Fair value of plan assets	0		11
Pension Benefits | Company Stock | Fair Value, Inputs, Level 2
Fair value of plan assets	0		0
Pension Benefits | Company Stock | Fair Value, Inputs, Level 3
Fair value of plan assets	0		0
Pension Benefits | Common Collective Trust Fund - Equity
Fair value of plan assets	3,727		3,612
Pension Benefits | Common Collective Trust Fund - Equity | Fair Value, Inputs, Level 1
Fair value of plan assets	0		0
Pension Benefits | Common Collective Trust Fund - Equity | Fair Value, Inputs, Level 2
Fair value of plan assets	3,727		3,612
Pension Benefits | Common Collective Trust Fund - Equity | Fair Value, Inputs, Level 3
Fair value of plan assets	0		0
Pension Benefits | Common Collective Trust Fund - Fixed Income
Fair value of plan assets	4,112		4,027
Pension Benefits | Common Collective Trust Fund - Fixed Income | Fair Value, Inputs, Level 1
Fair value of plan assets	0		0
Pension Benefits | Common Collective Trust Fund - Fixed Income | Fair Value, Inputs, Level 2
Fair value of plan assets	4,112		4,027
Pension Benefits | Common Collective Trust Fund - Fixed Income | Fair Value, Inputs, Level 3
Fair value of plan assets	0		0
Pension Benefits | Other Assets
Fair value of plan assets	71		55
Pension Benefits | Other Assets | Fair Value, Inputs, Level 1
Fair value of plan assets	0		0
Pension Benefits | Other Assets | Fair Value, Inputs, Level 2
Fair value of plan assets	0		0
Pension Benefits | Other Assets | Fair Value, Inputs, Level 3
Fair value of plan assets	71		55
Other Retiree Benefits
Fair value of plan assets	2,713	[2]	2,975	[2]	2,843	[2]
Other Retiree Benefits | Fair Value, Inputs, Level 1
Fair value of plan assets	16		43
Other Retiree Benefits | Fair Value, Inputs, Level 2
Fair value of plan assets	2,695		2,928
Other Retiree Benefits | Fair Value, Inputs, Level 3
Fair value of plan assets	2		4
Other Retiree Benefits | Cash and Cash Equivalents
Fair value of plan assets	16		43
Other Retiree Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 1
Fair value of plan assets	16		43
Other Retiree Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 2
Fair value of plan assets	0		0
Other Retiree Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 3
Fair value of plan assets	0		0
Other Retiree Benefits | Company Stock
Fair value of plan assets	2,418		2,655
Other Retiree Benefits | Company Stock | Fair Value, Inputs, Level 1
Fair value of plan assets	0		0
Other Retiree Benefits | Company Stock | Fair Value, Inputs, Level 2
Fair value of plan assets	2,418		2,655
Other Retiree Benefits | Company Stock | Fair Value, Inputs, Level 3
Fair value of plan assets	0		0
Other Retiree Benefits | Common Collective Trust Fund - Equity
Fair value of plan assets	30		41
Other Retiree Benefits | Common Collective Trust Fund - Equity | Fair Value, Inputs, Level 1
Fair value of plan assets	0		0
Other Retiree Benefits | Common Collective Trust Fund - Equity | Fair Value, Inputs, Level 2
Fair value of plan assets	30		41
Other Retiree Benefits | Common Collective Trust Fund - Equity | Fair Value, Inputs, Level 3
Fair value of plan assets	0		0
Other Retiree Benefits | Common Collective Trust Fund - Fixed Income
Fair value of plan assets	247		232
Other Retiree Benefits | Common Collective Trust Fund - Fixed Income | Fair Value, Inputs, Level 1
Fair value of plan assets	0		0
Other Retiree Benefits | Common Collective Trust Fund - Fixed Income | Fair Value, Inputs, Level 2
Fair value of plan assets	247		232
Other Retiree Benefits | Common Collective Trust Fund - Fixed Income | Fair Value, Inputs, Level 3
Fair value of plan assets	0		0
Other Retiree Benefits | Other Assets
Fair value of plan assets	2		4
Other Retiree Benefits | Other Assets | Fair Value, Inputs, Level 1
Fair value of plan assets	0		0
Other Retiree Benefits | Other Assets | Fair Value, Inputs, Level 2
Fair value of plan assets	0		0
Other Retiree Benefits | Other Assets | Fair Value, Inputs, Level 3
Fair value of plan assets	$ 2		$ 4

[1] Primarily non-U.S.-based defined benefit retirement plans.

[2] Primarily U.S.-based other postretirement benefit plans.