STOCKHOLDERS' EQUITY - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Class of Stock [Line Items]
Dividends declared per share of common stock (in usd per share)	$ 0.42	$ 0.42	$ 1.26	$ 1.20
Common stock dividends declared and paid	$ 199	$ 209	$ 609	$ 569
Preferred stock
Preferred stock dividends declared and paid	$ 30	$ 25	$ 87	$ 81
Series B
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 21.81	$ 0	$ 51.81	$ 30.00
Series C
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	15.93	15.93	47.81	47.81
Series D
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	15.88	15.88	47.63	47.63
Series E
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	12.50	12.50	37.50	37.50
Series F
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	14.13	14.13	42.38	42.38
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
Class of Stock [Line Items]
Common stock dividends declared and paid	$ 199	$ 209	$ 609	$ 569
Preferred stock
Preferred stock dividends declared and paid	30	25	87	81
Dividends Declared | Series B
Preferred stock
Preferred stock dividends declared and paid	7	0	16	9
Dividends Declared | Series C
Preferred stock
Preferred stock dividends declared and paid	4	5	14	15
Dividends Declared | Series D
Preferred stock
Preferred stock dividends declared and paid	4	5	14	14
Dividends Declared | Series E
Preferred stock
Preferred stock dividends declared and paid	6	6	17	17
Dividends Declared | Series F
Preferred stock
Preferred stock dividends declared and paid	6	6	17	17
Dividends Declared | Series G
Preferred stock
Preferred stock dividends declared and paid	3	3	9	9
Dividends Paid
Class of Stock [Line Items]
Common stock dividends declared and paid	199	209	609	569
Preferred stock
Preferred stock dividends declared and paid	32	34	89	90
Dividends Paid | Series B
Preferred stock
Preferred stock dividends declared and paid	9	9	18	18
Dividends Paid | Series C
Preferred stock
Preferred stock dividends declared and paid	4	5	14	15
Dividends Paid | Series D
Preferred stock
Preferred stock dividends declared and paid	4	5	14	14
Dividends Paid | Series E
Preferred stock
Preferred stock dividends declared and paid	6	6	17	17
Dividends Paid | Series F
Preferred stock
Preferred stock dividends declared and paid	6	6	17	17
Dividends Paid | Series G
Preferred stock
Preferred stock dividends declared and paid	$ 3	$ 3	$ 9	$ 9