PENSION, DEFERRED COMPENSATION AND POST-RETIREMENT BENEFIT PLANS - Changes in Level 3 Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2023	Jun. 30, 2022
Changes in Level 3 plan assets
Fair value of plan assets at beginning of year	$ 1,431
Actual return on plan assets:
Fair value of plan assets at end of year	1,296	$ 1,431
Level 3
Changes in Level 3 plan assets
Fair value of plan assets at beginning of year	46
Actual return on plan assets:
Fair value of plan assets at end of year	8	46
Insurance contracts
Changes in Level 3 plan assets
Fair value of plan assets at beginning of year	46
Actual return on plan assets:
Fair value of plan assets at end of year	8	46
Insurance contracts \| Level 3
Changes in Level 3 plan assets
Fair value of plan assets at beginning of year	46	54
Actual return on plan assets:
Relating to assets still held at the reporting date	(2)	(3)
Purchases, sales, issuances and settlements, net	(35)	1
Foreign exchange impact	(1)	(6)
Fair value of plan assets at end of year	$ 8	$ 46

No definition available.

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- Definition

Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets still held.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
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-Name Accounting Standards Codification
-Section 55
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/exampleRef
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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
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- Definition

Amount, measured using unobservable input, of increase (decrease) in plan asset of defined benefit plan from purchase, sale and settlement of trade associated with underlying investment.

+ References

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