FAIR VALUE MEASUREMENTS - Estimated Fair Values for All Financial Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financial liabilities
Other secured financing	$ 250,000	$ 903,255
Carrying Value | Level 3
Financial assets
Corporate debt, held for investment	0	1,968,991
Carrying Value | Level 2
Financial liabilities
Repurchase agreements	59,512,597	54,769,643
Other secured financing	250,000	903,255
Fair Value | Level 3
Financial assets
Corporate debt, held for investment	0	1,986,379
Fair Value | Level 2
Financial liabilities
Repurchase agreements	59,512,597	54,769,643
Other secured financing	$ 250,000	$ 903,255