STOCKHOLDERS' EQUITY - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Common stock
Dividends declared per share of common stock (in usd per share)	$ 0.42	$ 0.42	$ 1.26	$ 1.26
Dividends Declared	$ 190	$ 199	$ 581	$ 609
Dividends Paid	190	199	581	609
Preferred stock
Dividends Declared	38	30	103	87
Dividends Paid	$ 35	$ 32	$ 96	$ 89
Series B
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 21.68	$ 21.81	$ 65.06	$ 51.81
Dividends Declared	$ 6	$ 7	$ 19	$ 16
Dividends Paid	$ 7	$ 9	$ 20	$ 18
Series C
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 22.07	$ 15.93	$ 60.54	$ 47.81
Dividends Declared	$ 6	$ 4	$ 18	$ 14
Dividends Paid	$ 6	$ 4	$ 16	$ 14
Series D
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 0	$ 15.88	$ 39.66	$ 47.63
Dividends Declared	$ 0	$ 4	$ 12	$ 14
Dividends Paid	$ 7	$ 4	$ 17	$ 14
Series E
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 12.50	$ 12.50	$ 37.50	$ 37.50
Dividends Declared	$ 6	$ 6	$ 17	$ 17
Dividends Paid	$ 6	$ 6	$ 17	$ 17
Series F
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 14.13	$ 14.13	$ 42.38	$ 42.38
Dividends Declared	$ 6	$ 6	$ 17	$ 17
Dividends Paid	$ 6	$ 6	$ 17	$ 17
Series G
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 10.00	$ 10.00	$ 30.00	$ 30.00
Dividends Declared	$ 3	$ 3	$ 9	$ 9
Dividends Paid	$ 3	$ 3	$ 9	$ 9
Series H
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 27.25	$ 0	$ 27.25	$ 0
Dividends Declared	$ 11	$ 0	$ 11	$ 0
Dividends Paid	$ 0	$ 0	$ 0	$ 0

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