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PREFERRED STOCK - Schedule of Preferred Stock Outstanding (Details) - USD ($) $ / shares in Units, $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Class of Stock [Line Items] |  |
Carrying value | $ 19,050 | $ 17,850
Series P |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 2,000,000 |
Carrying value | $ 0 | 2,000
Percentage of interest in corresponding series of preferred stock | 4.00% |
Series T |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 1,500,000 |
Carrying value | $ 1,500 | 1,500
Percentage of interest in corresponding series of preferred stock | 4.00% |
Series T | Base Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 6.25% |
Series V |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 1,500,000 |
Carrying value | $ 0 | 1,500
Percentage of interest in corresponding series of preferred stock | 4.00% |
Series W |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 1,500,000 |
Carrying value | $ 1,500 | 1,500
Percentage of interest in corresponding series of preferred stock | 4.00% |
Series W | Base Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 4.00% |
Series W | US Treasury (UST) Interest Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 3.597% |
Series X |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 2,300,000 |
Carrying value | $ 2,300 | 2,300
Percentage of interest in corresponding series of preferred stock | 4.00% |
Series X | Base Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 3.875% |
Series X | US Treasury (UST) Interest Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 3.417% |
Series Y |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 1,000,000 |
Carrying value | $ 1,000 | 1,000
Percentage of interest in corresponding series of preferred stock | 4.00% |
Series Y | Base Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 4.15% |
Series Y | US Treasury (UST) Interest Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 3.00% |
Series Z |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 1,250,000 |
Carrying value | $ 1,250 | 1,250
Percentage of interest in corresponding series of preferred stock | 4.00% |
Series Z | Base Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 7.375% |
Series Z | US Treasury (UST) Interest Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 3.209% |
Series AA |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 1,500,000 |
Carrying value | $ 1,500 | 1,500
Percentage of interest in corresponding series of preferred stock | 4.00% |
Series AA | Base Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 7.625% |
Series AA | US Treasury (UST) Interest Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 3.211% |
Series BB |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 550,000 |
Carrying value | $ 550 | 550
Series BB | Base Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 7.20% |
Series BB | US Treasury (UST) Interest Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 2.905% |
Series CC |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 1,750,000 |
Carrying value | $ 1,750 | 1,750
Percentage of interest in corresponding series of preferred stock | 4.00% |
Series CC | Base Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 7.125% |
Series CC | US Treasury (UST) Interest Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 2.693% |
Series DD |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 1,500,000 |
Carrying value | $ 1,500 | 1,500
Percentage of interest in corresponding series of preferred stock | 4.00% |
Series DD | Base Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 7.00% |
Series DD | US Treasury (UST) Interest Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 2.757% |
Series EE |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 1,500,000 |
Carrying value | $ 1,500 | 1,500
Percentage of interest in corresponding series of preferred stock | 4.00% |
Series EE | Base Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 6.75% |
Series EE | US Treasury (UST) Interest Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 2.572% |
Series FF |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 2,000,000 |
Carrying value | $ 2,000 | 0
Percentage of interest in corresponding series of preferred stock | 4.00% |
Series FF | Base Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 6.95% |
Series FF | US Treasury (UST) Interest Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 2.726% |
Series GG |  |
Class of Stock [Line Items] |  |
Redemption price per depositary share/ preference share (in dollars per share) | $ 1,000 |
Number of depositary shares (in shares) | 2,700,000 |
Carrying value | $ 2,700 | $ 0
Percentage of interest in corresponding series of preferred stock | 4.00% |
Series GG | Base Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 6.875% |
Series GG | US Treasury (UST) Interest Rate |  |
Class of Stock [Line Items] |  |
Dividend rate (as a percent) | 2.89% |

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