PREFERRED STOCK (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2024	Feb. 12, 2025	Dec. 31, 2023
Class of Stock [Line Items]
Carrying value	$ 17,850		$ 17,600
Series D
Class of Stock [Line Items]
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	1,250
Carrying value	$ 0		1,250
Series J
Class of Stock [Line Items]
Redemption price per depositary share/ preference share (in dollars per share)	$ 25
Number of depositary shares (in shares)	22,000
Carrying value	$ 0		550
Series M
Class of Stock [Line Items]
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	1,750
Carrying value	$ 0		1,750
Series P
Class of Stock [Line Items]
Dividend rate (as a percent)	5.95%
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	2,000
Carrying value	$ 2,000		2,000
Percentage of noncumulative perpetual preferred stock	4.00%
Series T
Class of Stock [Line Items]
Dividend rate (as a percent)	6.25%
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	1,500
Carrying value	$ 1,500		1,500
Percentage of noncumulative perpetual preferred stock	4.00%
Series U
Class of Stock [Line Items]
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	1,500
Carrying value	$ 0		1,500
Percentage of noncumulative perpetual preferred stock	4.00%
Series V
Class of Stock [Line Items]
Dividend rate (as a percent)	4.70%
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	1,500
Carrying value	$ 1,500		1,500
Percentage of noncumulative perpetual preferred stock	4.00%
Series W
Class of Stock [Line Items]
Dividend rate (as a percent)	4.00%
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	1,500
Carrying value	$ 1,500		1,500
Percentage of noncumulative perpetual preferred stock	4.00%
Series W | London Interbank Offered Rate (LIBOR) 1
Class of Stock [Line Items]
Dividend rate (as a percent)	3.597%
Series X
Class of Stock [Line Items]
Dividend rate (as a percent)	3.875%
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	2,300
Carrying value	$ 2,300		2,300
Percentage of noncumulative perpetual preferred stock	4.00%
Series X | London Interbank Offered Rate (LIBOR) 1
Class of Stock [Line Items]
Dividend rate (as a percent)	3.417%
Series Y
Class of Stock [Line Items]
Dividend rate (as a percent)	4.15%
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	1,000
Carrying value	$ 1,000		1,000
Percentage of noncumulative perpetual preferred stock	4.00%
Series Y | London Interbank Offered Rate (LIBOR) 1
Class of Stock [Line Items]
Dividend rate (as a percent)	3.00%
Series Z
Class of Stock [Line Items]
Dividend rate (as a percent)	7.375%
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	1,250
Carrying value	$ 1,250		1,250
Percentage of noncumulative perpetual preferred stock	4.00%
Series Z | London Interbank Offered Rate (LIBOR) 1
Class of Stock [Line Items]
Dividend rate (as a percent)	3.209%
Series AA
Class of Stock [Line Items]
Dividend rate (as a percent)	7.625%
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	1,500
Carrying value	$ 1,500		1,500
Percentage of noncumulative perpetual preferred stock	4.00%
Series AA | London Interbank Offered Rate (LIBOR) 1
Class of Stock [Line Items]
Dividend rate (as a percent)	3.211%
Series BB
Class of Stock [Line Items]
Dividend rate (as a percent)	7.20%
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	550
Carrying value	$ 550		0
Percentage of noncumulative perpetual preferred stock	4.00%
Series BB | London Interbank Offered Rate (LIBOR) 1
Class of Stock [Line Items]
Dividend rate (as a percent)	2.905%
Series CC
Class of Stock [Line Items]
Dividend rate (as a percent)	7.125%
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	1,750
Carrying value	$ 1,750		0
Percentage of noncumulative perpetual preferred stock	4.00%
Series CC | London Interbank Offered Rate (LIBOR) 1
Class of Stock [Line Items]
Dividend rate (as a percent)	2.693%
Series DD
Class of Stock [Line Items]
Dividend rate (as a percent)	7.00%
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	1,500
Carrying value	$ 1,500		0
Percentage of noncumulative perpetual preferred stock	4.00%
Series DD | London Interbank Offered Rate (LIBOR) 1
Class of Stock [Line Items]
Dividend rate (as a percent)	2.757%
Series EE
Class of Stock [Line Items]
Dividend rate (as a percent)	6.75%
Redemption price per depositary share/ preference share (in dollars per share)	$ 1,000
Number of depositary shares (in shares)	1,500
Carrying value	$ 1,500		$ 0
Percentage of noncumulative perpetual preferred stock	4.00%
Series EE | London Interbank Offered Rate (LIBOR) 1
Class of Stock [Line Items]
Dividend rate (as a percent)	2.572%
Series FF | Subsequent event
Class of Stock [Line Items]
Carrying value		$ 2,000