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SHORT-TERM AND LONG-TERM DEBT - Summary of Short and Long-term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2025	Mar. 26, 2025	Dec. 31, 2024	Jun. 30, 2024
Debt Instrument [Line Items]
Total short-term debt	$ 0		$ 0
Total long-term debt	4,330		3,833
Total short and long-term debt	4,330		3,833
Senior Notes \| Senior Debenture due 2028
Debt Instrument [Line Items]
Total long-term debt	250		250
Senior Notes \| Senior Note due 2028
Debt Instrument [Line Items]
Total long-term debt	1,495		1,494
Senior Notes \| Senior Note due 2029
Debt Instrument [Line Items]
Debt instrument, stated percentage				4.572%
Total long-term debt	304		303
Senior Notes \| Senior Note due 2033
Debt Instrument [Line Items]
Total long-term debt	497		497
Senior Notes \| Senior Note due 2048
Debt Instrument [Line Items]
Total long-term debt	1,289		1,289
Junior Subordinated Debt \| Junior Subordinated Debt Due 2055
Debt Instrument [Line Items]
Debt instrument, stated percentage		6.70%
Total long-term debt	495		0
AB commercial paper
Debt Instrument [Line Items]
Total short-term debt	$ 0		$ 0