STOCKHOLDERS' EQUITY - Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	May 23, 2024	Dec. 31, 2023
Preferred Stock
Preferred stock, par value (in dollars per share)	$ 25.00		$ 25.00
Preferred stock, authorized (in shares)	100,000,000		100,000,000
Preferred stock, issued (in shares)	2,150,000		2,050,000
Preferred stock, issued	$ 2,113		$ 2,014
Series B
Preferred Stock
Preferred stock, liquidation preference (in dollars per share)	$ 1,000
Preferred stock, issued (in shares)	300,000		300,000
Preferred stock, issued	$ 296		$ 296
Series C
Preferred Stock
Preferred stock, liquidation preference (in dollars per share)	$ 1,000
Preferred stock, issued (in shares)	300,000		300,000
Preferred stock, issued	$ 297		$ 297
Series D
Preferred Stock
Preferred stock, liquidation preference (in dollars per share)	$ 1,000
Preferred stock, issued (in shares)	0		300,000
Preferred stock, issued	$ 0		$ 293
Shares issued (in dollars per share)	$ 25
Depositary shares issued (in shares)	12,000,000
Depository share interest percentage	2.50%
Series E
Preferred Stock
Preferred stock, liquidation preference (in dollars per share)	$ 1,000
Preferred stock, issued (in shares)	450,000		450,000
Preferred stock, issued	$ 437		$ 437
Shares issued (in dollars per share)	$ 25
Depositary shares issued (in shares)	18,000,000
Depository share interest percentage	2.50%
Series F
Preferred Stock
Preferred stock, liquidation preference (in dollars per share)	$ 1,000
Preferred stock, issued (in shares)	400,000		400,000
Preferred stock, issued	$ 395		$ 395
Series G
Preferred Stock
Preferred stock, liquidation preference (in dollars per share)	$ 1,000
Preferred stock, issued (in shares)	300,000		300,000
Preferred stock, issued	$ 296		$ 296
Series H
Preferred Stock
Preferred stock, par value (in dollars per share)		$ 25.00
Preferred stock, liquidation preference (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, issued (in shares)	400,000	400,000	0
Preferred stock, issued	$ 392	$ 400	$ 0
Depositary shares issued (in shares)	16,000,000
Depository share interest percentage	2.50%