PENSION AND POST-RETIREMENT BENEFIT PLANS - Projected and Accumulated Benefit Obligation and Fair Value of Plan Assets (Details) - USD ($) $ in Millions	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Defined Benefit Plan Disclosure
Fair value of plan assets	$ 1,554	$ 1,437
Pension Plans \| Retirement Growth Account
Defined Benefit Plan Disclosure
Projected benefit obligation	880	846
Accumulated benefit obligation	863	825
Fair value of plan assets	919	826
Pension Plans \| Pension Plans Restoration
Defined Benefit Plan Disclosure
Projected benefit obligation	109	118
Accumulated benefit obligation	105	112
Fair value of plan assets	0	0
Pension Plans \| International
Defined Benefit Plan Disclosure
Projected benefit obligation	567	595	$ 541
Accumulated benefit obligation	513	532
Fair value of plan assets	635	611	567
Defined benefit plans with obligations in excess of plan assets:
Pension plans with projected benefit obligations in excess of the plans' assets, aggregate projected benefit obligations	97	326
Pension plans with projected benefit obligations in excess of the plans' assets, aggregate fair value of plan assets	4	214
Defined benefit plans with accumulated benefit obligations in excess of plan assets:
Pension plans with accumulated benefit obligations in excess of the plans' assets, aggregate accumulated benefit obligations	87	91
Pension plans with accumulated benefit obligations in excess of the plans' assets, aggregate fair value of plan assets	4	4
Other than Pension Plans
Defined Benefit Plan Disclosure
Projected benefit obligation	144	143	144
Accumulated benefit obligation	0	0
Fair value of plan assets	$ 0	$ 0	$ 0

Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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Amount of plan asset for defined benefit pension plan with projected benefit obligation in excess of plan assets.

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Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets.

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