INCOME TAXES - Schedule of Carryforwards with Related Valuation Allowances (Details) - USD ($) $ in Millions	Jun. 30, 2026	Jun. 30, 2025
Net operating losses:
Carryforwards	$ 28	$ 29
Valuation Allowances	(15)	(17)
Net Carryforwards	13	12
Carryforwards	177	208
Valuation Allowances	(126)	(160)
Net Carryforwards	51	48
Income Tax Jurisdiction, Domestic Federal | Carryforwards
Tax Credit Carryforwards
Capital loss carryforwards	95	98
Income Tax Jurisdiction, Domestic Federal | Valuation Allowances
Tax Credit Carryforwards
Capital loss carryforwards	(92)	(98)
Income Tax Jurisdiction, Domestic Federal | Net Carryforwards
Tax Credit Carryforwards
Capital loss carryforwards	3	0
U.S. state and local: | Carryforwards
Tax Credit Carryforwards
Capital loss carryforwards	10	10
U.S. state and local: | Valuation Allowances
Tax Credit Carryforwards
Capital loss carryforwards	(10)	(10)
U.S. state and local: | Net Carryforwards
Tax Credit Carryforwards
Capital loss carryforwards	0	0
Subject to Expiration | Income Tax Jurisdiction, Domestic Federal
Net operating losses:
Carryforwards	3
Valuation Allowances	(2)
Net Carryforwards	1
Subject to Expiration | United States
Net operating losses:
Carryforwards		2
Valuation Allowances		(2)
Net Carryforwards		0
Subject to Expiration | Income Tax Jurisdiction, Foreign
Net operating losses:
Carryforwards	12	16
Valuation Allowances	(10)	(12)
Net Carryforwards	2	4
Not Subject to Expiration | Income Tax Jurisdiction, Domestic Federal
Net operating losses:
Carryforwards	4
Valuation Allowances	(3)
Net Carryforwards	1
Not Subject to Expiration | United States
Net operating losses:
Carryforwards		4
Valuation Allowances		(3)
Net Carryforwards		1
Not Subject to Expiration | Income Tax Jurisdiction, Foreign
Net operating losses:
Carryforwards	9	7
Valuation Allowances	0	0
Net Carryforwards	9	7
Capital losses | Income Tax Jurisdiction, Domestic Federal
Tax Credit Carryforwards
Carryforwards	105	108
Valuation Allowances	(102)	(108)
Net Carryforwards	3	0
Income tax credits
Tax Credit Carryforwards
Carryforwards	44	71
Valuation Allowances	(9)	(35)
Net Carryforwards	35	36
Income tax credits | Subject to Expiration | Income Tax Jurisdiction, Domestic Federal
Tax Credit Carryforwards
Carryforwards	33
Valuation Allowances	0
Net Carryforwards	33
Income tax credits | Subject to Expiration | United States
Tax Credit Carryforwards
Carryforwards		33
Valuation Allowances		0
Net Carryforwards		33
Income tax credits | Subject to Expiration | Income Tax Jurisdiction, Foreign
Tax Credit Carryforwards
Carryforwards		30
Valuation Allowances		(30)
Net Carryforwards		0
Income tax credits | Not Subject to Expiration | Income Tax Jurisdiction, Domestic Federal
Tax Credit Carryforwards
Carryforwards	1
Valuation Allowances	0
Net Carryforwards	1
Income tax credits | Not Subject to Expiration | United States
Tax Credit Carryforwards
Carryforwards		2
Valuation Allowances		0
Net Carryforwards		2
Income tax credits | Not Subject to Expiration | Income Tax Jurisdiction, Foreign
Tax Credit Carryforwards
Carryforwards	10	6
Valuation Allowances	(9)	(5)
Net Carryforwards	$ 1	$ 1