CAPITAL STOCK - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions				3 Months Ended		6 Months Ended
	May 08, 2025	Dec. 31, 2024	Sep. 20, 2024	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Jan. 31, 2025	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 USD 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
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)	$ 2,000.0		$ 1,500.0
Sale of stock, shares issued (in shares)				39,700,000	600,000	63,000,000	600,000
Proceeds from sale of stock				$ 761.2	$ 11.3	$ 1,300.0	$ 11.3
Share Repurchase Program
Class of Stock [Line Items]
Authorized amount of stock available for repurchase (up to)								$ 1,500.0	$ 1,500.0
Shares repurchased (in shares)				0	0