STOCKHOLDERS' EQUITY - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Common stock
Dividends declared per share of common stock (in usd per share)	$ 0.42	$ 0.42
Dividends Declared	$ 186	$ 197
Dividends Paid	186	197
Preferred stock
Dividends Declared	33	30
Dividends Paid	$ 34	$ 31
Series B
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 19.11	$ 21.72
Dividends Declared	$ 6	$ 7
Dividends Paid	$ 6	$ 7
Series C
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 19.50	$ 15.94
Dividends Declared	$ 6	$ 5
Dividends Paid	$ 6	$ 5
Series D
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 0	$ 15.88
Dividends Declared	$ 0	$ 5
Dividends Paid	$ 0	$ 5
Series E
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 12.50	$ 12.50
Dividends Declared	$ 5	$ 5
Dividends Paid	$ 6	$ 5
Series F
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 14.13	$ 14.13
Dividends Declared	$ 6	$ 5
Dividends Paid	$ 6	$ 6
Series G
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 10.00	$ 10.00
Dividends Declared	$ 3	$ 3
Dividends Paid	$ 3	$ 3
Series H
Preferred stock
Dividends declared per share of preferred stock (in usd per share)	$ 18.44	$ 0
Dividends Declared	$ 7	$ 0
Dividends Paid	$ 7	$ 0

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-SubTopic 405
-Topic 942
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477787/942-405-45-2

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
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-Name Accounting Standards Codification
-Section 45
-Paragraph 15
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

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Amount of cash outflow in the form of ordinary dividends to preferred shareholders of the parent entity.

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Aggregate dividends declared during the period for each share of preferred stock outstanding.

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