STOCKHOLDERS' EQUITY - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Common stock
Dividends declared per share of common stock (in usd per share)	$ 0.42	$ 0.42	$ 1.26	$ 1.26
Dividends Declared	$ 184	$ 190	$ 555	$ 581
Dividends Paid	184	190	555	581
Preferred stock
Dividends Declared	32	38	99	103
Dividends Paid	$ 33	$ 35	$ 100	$ 96
Series B
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 19.07	$ 21.68	$ 57.26	$ 65.06
Dividends Declared	$ 5	$ 6	$ 17	$ 19
Dividends Paid	$ 5	$ 7	$ 17	$ 20
Series C
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 19.46	$ 22.07	$ 58.43	$ 60.54
Dividends Declared	$ 5	$ 6	$ 17	$ 18
Dividends Paid	$ 6	$ 6	$ 18	$ 16
Series D
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 0	$ 0	$ 0	$ 39.66
Dividends Declared	$ 0	$ 0	$ 0	$ 12
Dividends Paid	$ 0	$ 7	$ 0	$ 17
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)	$ 18.43	$ 27.25	$ 55.31	$ 27.25
Dividends Declared	$ 7	$ 11	$ 22	$ 11
Dividends Paid	$ 7	$ 0	$ 22	$ 0

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