INVESTMENTS - Schedule of Total Gains and Losses on Equity Securities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Schedule of Investments [Abstract]
Total gains (losses) recognized on equity securities	$ (21)	$ (12)	$ (34)	$ 16
Less: Net gains (losses) recognized on equity securities sold	0	(1)	(1)	(1)
Unrealized gains (losses) recognized on equity securities held at end of period	$ (21)	$ (11)	$ (33)	$ 17