PENSION, DEFERRED COMPENSATION AND POST-RETIREMENT BENEFIT PLANS - Fair Values of the Company's Pension and Post-Retirement Plan Assets by Asset Category (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Defined Benefit Plan Disclosure
Fair value of plan assets	$ 1,368	$ 1,296
Level 1
Defined Benefit Plan Disclosure
Fair value of plan assets	440	334
Level 2
Defined Benefit Plan Disclosure
Fair value of plan assets	670	698
Level 3
Defined Benefit Plan Disclosure
Fair value of plan assets	14	8
Assets Measured at NAV
Defined Benefit Plan Disclosure
Fair value of plan assets	244	256
Cash and cash equivalents
Defined Benefit Plan Disclosure
Fair value of plan assets	2	2
Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure
Fair value of plan assets	2	2
Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure
Fair value of plan assets	0	0
Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure
Fair value of plan assets	0	0
Cash and cash equivalents | Assets Measured at NAV
Defined Benefit Plan Disclosure
Fair value of plan assets	0	0
Short-term investment funds
Defined Benefit Plan Disclosure
Fair value of plan assets	31	15
Short-term investment funds | Level 1
Defined Benefit Plan Disclosure
Fair value of plan assets	0	0
Short-term investment funds | Level 2
Defined Benefit Plan Disclosure
Fair value of plan assets	28	12
Short-term investment funds | Level 3
Defined Benefit Plan Disclosure
Fair value of plan assets	0	0
Short-term investment funds | Assets Measured at NAV
Defined Benefit Plan Disclosure
Fair value of plan assets	3	3
Government and agency securities
Defined Benefit Plan Disclosure
Fair value of plan assets	137	139
Government and agency securities | Level 1
Defined Benefit Plan Disclosure
Fair value of plan assets	137	0
Government and agency securities | Level 2
Defined Benefit Plan Disclosure
Fair value of plan assets	0	139
Government and agency securities | Level 3
Defined Benefit Plan Disclosure
Fair value of plan assets	0	0
Government and agency securities | Assets Measured at NAV
Defined Benefit Plan Disclosure
Fair value of plan assets	0	0
Commingled funds
Defined Benefit Plan Disclosure
Fair value of plan assets	$ 1,091	1,022
Commingled funds | Minimum
Defined Benefit Plan Disclosure
Monthly and/or quarterly redemption notice period	10 days
Commingled funds | Maximum
Defined Benefit Plan Disclosure
Monthly and/or quarterly redemption notice period	30 days
Commingled funds | Level 1
Defined Benefit Plan Disclosure
Fair value of plan assets	$ 301	332
Commingled funds | Level 2
Defined Benefit Plan Disclosure
Fair value of plan assets	642	547
Commingled funds | Level 3
Defined Benefit Plan Disclosure
Fair value of plan assets	0	0
Commingled funds | Assets Measured at NAV
Defined Benefit Plan Disclosure
Fair value of plan assets	148	143
Insurance contracts
Defined Benefit Plan Disclosure
Fair value of plan assets	14	8
Insurance contracts | Level 1
Defined Benefit Plan Disclosure
Fair value of plan assets	0	0
Insurance contracts | Level 2
Defined Benefit Plan Disclosure
Fair value of plan assets	0	0
Insurance contracts | Level 3
Defined Benefit Plan Disclosure
Fair value of plan assets	14	8	$ 46
Insurance contracts | Assets Measured at NAV
Defined Benefit Plan Disclosure
Fair value of plan assets	0	0
Interests in limited partnerships and hedge fund investments
Defined Benefit Plan Disclosure
Fair value of plan assets	$ 93	110
Interests in limited partnerships and hedge fund investments | Minimum
Defined Benefit Plan Disclosure
Monthly and/or quarterly redemption notice period	30 days
Interests in limited partnerships and hedge fund investments | Maximum
Defined Benefit Plan Disclosure
Monthly and/or quarterly redemption notice period	90 days
Interests in limited partnerships and hedge fund investments | Level 1
Defined Benefit Plan Disclosure
Fair value of plan assets	$ 0	0
Interests in limited partnerships and hedge fund investments | Level 2
Defined Benefit Plan Disclosure
Fair value of plan assets	0	0
Interests in limited partnerships and hedge fund investments | Level 3
Defined Benefit Plan Disclosure
Fair value of plan assets	0	0
Interests in limited partnerships and hedge fund investments | Assets Measured at NAV
Defined Benefit Plan Disclosure
Fair value of plan assets	$ 93	$ 110