STOCKHOLDERS' EQUITY - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Common stock
Dividends declared per share of common stock (in usd per share)	$ 0.46	$ 0.42	$ 0.92	$ 0.84
Dividends Declared	$ 198	$ 185	$ 396	$ 371
Dividends Paid	198	185	396	371
Preferred stock
Dividends Declared	33	34	66	67
Dividends Paid	$ 33	$ 33	$ 71	$ 67
Series B
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 17.54	$ 19.08	$ 34.83	$ 38.19
Dividends Declared	$ 5	$ 6	$ 10	$ 12
Dividends Paid	$ 5	$ 6	$ 10	$ 12
Series C
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 17.94	$ 19.47	$ 35.61	$ 38.97
Dividends Declared	$ 6	$ 6	$ 11	$ 12
Dividends Paid	$ 5	$ 6	$ 11	$ 12
Series E
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 12.50	$ 12.50	$ 25.00	$ 25.00
Dividends Declared	$ 5	$ 6	$ 11	$ 11
Dividends Paid	$ 5	$ 5	$ 11	$ 11
Series F Preferred Stock [Member]
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 0	$ 14.12	$ 0	$ 28.25
Dividends Declared	$ 0	$ 5	$ 0	$ 11
Dividends Paid	$ 0	$ 5	$ 0	$ 11
Series G
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 10.00	$ 10.00	$ 20.00	$ 20.00
Dividends Declared	$ 3	$ 3	$ 6	$ 6
Dividends Paid	$ 3	$ 3	$ 6	$ 6
Series H
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 18.44	$ 18.44	$ 36.88	$ 36.88
Dividends Declared	$ 8	$ 8	$ 15	$ 15
Dividends Paid	$ 8	$ 8	$ 15	$ 15
Series I
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 16.25	$ 0	$ 32.50	$ 0
Dividends Declared	$ 6	$ 0	$ 13	$ 0
Dividends Paid	$ 7	$ 0	$ 18	$ 0

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