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CAPITAL STOCK - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 20, 2024 | Nov. 03, 2022 | Aug. 06, 2020 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023 | Jan. 31, 2022
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Preferred stock, par value (USD per share) |  |  |  | $ 0.01 |  | $ 0.01 |  | $ 0.01 |
Preferred stock, redemption price (in dollars per share) |  |  |  | $ 25.00 |  | $ 25.00 |  |  |
Preferred stock |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Authorized amount of stock available for repurchase (up to) |  | $ 1,600.0 |  |  |  |  |  |  |
Shares repurchased (in shares) |  |  |  | 0 |  | 0 |  |  |
Stock repurchase program, number of shares authorized to be repurchased (in shares) |  | 63,500,000 |  |  |  |  |  |  |
Series F Preferred Stock |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Preferred stock, par value (USD per share) |  | $ 0.01 |  |  |  |  |  |  |
Stock repurchase program, number of shares authorized to be repurchased (in shares) |  | 28,800,000 |  |  |  |  |  |  |
Preferred stock dividend rate, percentage |  | 6.95% |  |  |  | 6.95% |  |  |
Series G Preferred Stock |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Preferred stock, par value (USD per share) |  | $ 0.01 |  |  |  |  |  |  |
Stock repurchase program, number of shares authorized to be repurchased (in shares) |  | 17,000,000 |  |  |  |  |  |  |
Preferred stock dividend rate, percentage |  | 6.50% |  |  |  | 6.50% |  |  |
Series I |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Preferred stock, par value (USD per share) |  | $ 0.01 |  |  |  |  |  |  |
Stock repurchase program, number of shares authorized to be repurchased (in shares) |  | 17,700,000 |  |  |  |  |  |  |
Preferred stock dividend rate, percentage |  | 6.75% |  |  |  | 6.75% |  |  |
At-the-market Sale Program |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Aggregate stock offering price (up to) | $ 1,500.0 |  | $ 1,500.0 |  |  |  |  |  |
Sale of stock, shares issued (in shares) |  |  |  | 57,000,000 | 900,000 | 57,600,000 | 26,200,000 |  |
Proceeds from sale of stock |  |  |  | $ 1,100.0 | $ 17.8 | $ 1,200.0 | $ 580.5 |  |
Share Repurchase Program |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Authorized amount of stock available for repurchase (up to) |  |  |  |  |  |  |  |  | $ 1,500.0
Shares repurchased (in shares) |  |  |  | 0 | 0 | 0 | 0 |  |

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