PENSION, DEFERRED COMPENSATION AND POST-RETIREMENT BENEFIT PLANS - Changes in Level 3 Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Changes in Level 3 plan assets
Fair value of plan assets at beginning of year	$ 1,296
Actual return on plan assets:
Fair value of plan assets at end of year	1,368	$ 1,296
Level 3
Changes in Level 3 plan assets
Fair value of plan assets at beginning of year	8
Actual return on plan assets:
Fair value of plan assets at end of year	14	8
Insurance contracts
Changes in Level 3 plan assets
Fair value of plan assets at beginning of year	8
Actual return on plan assets:
Fair value of plan assets at end of year	14	8
Insurance contracts | Level 3
Changes in Level 3 plan assets
Fair value of plan assets at beginning of year	8	46
Actual return on plan assets:
Relating to assets still held at the reporting date	1	(2)
Purchases, sales, issuances and settlements, net	5	(35)
Foreign exchange impact	0	(1)
Fair value of plan assets at end of year	$ 14	$ 8