RELATED-PARTY TRANSACTIONS -Schedule of Related-Party Interest Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Related Party Transaction [Line Items]
Net investment income	$ 242	$ 176	$ 432	$ 333
1.69% Long-term Note
Related Party Transaction [Line Items]
Interest rate			1.69%
1.00% Long-term Note
Related Party Transaction [Line Items]
Interest rate			1.00%
3.11% Long-term Note
Related Party Transaction [Line Items]
Interest rate			3.11%
4.34%Long-term Note
Related Party Transaction [Line Items]
Interest rate			4.34%
Affiliated Entity
Related Party Transaction [Line Items]
Net investment income	3	2	$ 7	4
Affiliated Entity | 1.69% Long-term Note
Related Party Transaction [Line Items]
Net investment income	1	1	$ 2	3
Affiliated Entity | 1.00% Long-term Note
Related Party Transaction [Line Items]
Interest rate			1.00%
Net investment income	0	1	$ 1	1
Affiliated Entity | 3.11% Long-term Note
Related Party Transaction [Line Items]
Interest rate			3.11%
Net investment income	1	0	$ 3	0
Affiliated Entity | 4.34%Long-term Note
Related Party Transaction [Line Items]
Interest rate			4.34%
Net investment income	$ 1	$ 0	$ 2	$ 0