INVESTMENTS - Transitional Real Estate Loans by Key Credit Quality Indicators (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Loan-to-Value Ratio:
Total	$ 11,224	$ 12,801
Transitional real estate loans
Loan-to-Value Ratio:
2024	0
2023	130
2022	1,976
2021	1,887
2020	182
Prior	727
Total	4,902	$ 6,114
Current-period gross writeoffs:
2024	0
2023	0
2022	0
2021	5
2020	0
Prior	57
Total	62
Transitional real estate loans | Loan to Value Ratio, 0% to 59.99%
Loan-to-Value Ratio:
2024	0
2023	0
2022	314
2021	357
2020	36
Prior	11
Total	718
Transitional real estate loans | Loan to Value Ratio, 60% to 69.99%
Loan-to-Value Ratio:
2024	0
2023	116
2022	500
2021	599
2020	18
Prior	390
Total	1,623
Transitional real estate loans | Loan to Value Ratio, 70% to 79.99%
Loan-to-Value Ratio:
2024	0
2023	14
2022	903
2021	660
2020	24
Prior	58
Total	1,659
Transitional real estate loans | Loan to Value Ratio, 80% or greater
Loan-to-Value Ratio:
2024	0
2023	0
2022	259
2021	271
2020	104
Prior	268
Total	$ 902