CAPITAL STOCK - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended		6 Months Ended
	Nov. 03, 2022	Aug. 06, 2020	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Jan. 31, 2022	Dec. 31, 2020
Class of Stock [Line Items]
Authorized amount of stock available for repurchase (up to)									$ 1,500.0
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
Sale of stock, shares issued (in shares)			600,000		600,000	25,300,000
Proceeds from sale of stock			$ 11.3		$ 11.3	$ 562.7
Current 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