RETIREMENT BENEFIT OBLIGATIONS - Schedule of Components of Net Periodic Costs (Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	$ 1	$ 1	$ 1
Interest costs on projected benefit obligations	41	44	49
Expected return on plan assets	(55)	(51)	(49)
Amortization of deferred losses	20	20	20
Amortization of prior service credits	(4)	(4)	(4)
Settlements, curtailments and other	0	0	11
Net periodic benefit costs (income) – Total	$ 3	$ 10	$ 28
Defined benefit plan, net periodic benefit (cost) credit, expected return (loss), statement of income or comprehensive income [extensible enumeration]	Expected return on plan assets	Expected return on plan assets	Expected return on plan assets
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	$ 0	$ 0	$ 0
Interest costs on projected benefit obligations	2	3	3
Expected return on plan assets	0	0	0
Amortization of deferred losses	0	0	0
Amortization of prior service credits	(4)	(4)	(4)
Settlements, curtailments and other	0	0	0
Net periodic benefit costs (income) – Total	(2)	(1)	(1)
Domestic Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	0	0	0
Interest costs on projected benefit obligations	10	12	13
Expected return on plan assets	(11)	(11)	(12)
Amortization of deferred losses	5	5	5
Amortization of prior service credits	0	0	0
Settlements, curtailments and other	0	0	0
Net periodic benefit costs (income) – Total	4	6	6
Foreign Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost benefits earned during the period	1	1	1
Interest costs on projected benefit obligations	29	29	33
Expected return on plan assets	(44)	(40)	(37)
Amortization of deferred losses	15	15	15
Amortization of prior service credits	0	0	0
Settlements, curtailments and other	0	0	11
Net periodic benefit costs (income) – Total	$ 1	$ 5	$ 23