STOCKHOLDERS' EQUITY - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Class of Stock [Line Items]
Dividends declared per share of common stock (in usd per share)	$ 0.42	$ 0.39	$ 1.20	$ 1.17
Common stock dividends declared and paid	$ 209	$ 167	$ 569	$ 502
Preferred stock dividends declared and paid	$ 25	$ 26	$ 81	$ 81
Series A Preferred Stock
Class of Stock [Line Items]
Dividends declared per share of preferred stock (in usd per share)	$ 0	$ 0	$ 0	$ 20.99
Series B Preferred Stock
Class of Stock [Line Items]
Dividends declared per share of preferred stock (in usd per share)	0	0	30.00	30.00
Series C Preferred Stock
Class of Stock [Line Items]
Dividends declared per share of preferred stock (in usd per share)	15.93	15.94	47.81	47.81
Series D Preferred Stock
Class of Stock [Line Items]
Dividends declared per share of preferred stock (in usd per share)	15.88	15.88	47.63	47.63
Series E Preferred Stock
Class of Stock [Line Items]
Dividends declared per share of preferred stock (in usd per share)	12.50	12.50	37.50	37.50
Series F Preferred Stock
Class of Stock [Line Items]
Dividends declared per share of preferred stock (in usd per share)	14.13	14.13	42.38	42.38
Series G Preferred Stock
Class of Stock [Line Items]
Dividends declared per share of preferred stock (in usd per share)	$ 10.00	$ 12.78	$ 30.00	$ 12.78
Dividends Declared
Class of Stock [Line Items]
Common stock dividends declared and paid	$ 209	$ 167	$ 569	$ 502
Preferred stock dividends declared and paid	25	26	81	81
Dividends Declared | Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	0	0	0	5
Dividends Declared | Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	0	0	9	9
Dividends Declared | Series C Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	5	5	15	15
Dividends Declared | Series D Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	5	5	14	14
Dividends Declared | Series E Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	6	6	17	17
Dividends Declared | Series F Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	6	6	17	17
Dividends Declared | Series G Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	3	4	9	4
Dividends Paid
Class of Stock [Line Items]
Common stock dividends declared and paid	209	167	569	502
Preferred stock dividends declared and paid	34	33	90	88
Dividends Paid | Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	0	3	0	8
Dividends Paid | Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	9	9	18	18
Dividends Paid | Series C Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	5	5	15	15
Dividends Paid | Series D Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	5	4	14	13
Dividends Paid | Series E Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	6	6	17	17
Dividends Paid | Series F Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	6	6	17	17
Dividends Paid | Series G Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	$ 3	$ 0	$ 9	$ 0