POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - PENSION PLANS WITH ACCUMULATED AND PROJECTED BENEFIT OBLIGATIONS IN EXCESS OF PLAN ASSETS (DETAILS) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets
Projected benefit obligation	$ 11,623	$ 6,817
Accumulated benefit obligation	10,009	5,923
Fair value of plan assets	6,013	2,845
Projected Benefit Obligation Exceeds the Fair Value of Plan Assets
Projected benefit obligation	12,310	10,650
Accumulated benefit obligation	10,533	8,940
Fair value of plan assets	$ 6,583	$ 6,214

POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - PENSION PLANS WITH ACCUMULATED AND PROJECTED BENEFIT OBLIGATIONS IN EXCESS OF PLAN ASSETS (DETAILS) (USD $)
In Millions, unless otherwise specified

Jun. 30, 2012

Jun. 30, 2011

Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets

Projected benefit obligation

$ 11,623

$ 6,817

Accumulated benefit obligation

10,009

5,923

Fair value of plan assets

6,013

2,845

Projected Benefit Obligation Exceeds the Fair Value of Plan Assets

Projected benefit obligation

12,310

10,650

Accumulated benefit obligation

10,533

8,940

Fair value of plan assets

$ 6,583

$ 6,214

- Definition

If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References+ Details

- Definition

If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References+ Details

- Definition

If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References+ Details