INVESTMENTS - Other Loans by Key Credit Quality Indicators (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Loan-to-Value Ratio:
Total	$ 11,024	$ 11,224
Other loans
Loan-to-Value Ratio:
2025	0
2024	184
2023	68
2022	114
2021	3
Prior	0
Revolving Loans	0
Total	369	$ 362
Current-period gross writeoffs:
2025	0
2024	0
2023	0
2022	0
2021	0
Prior	0
Revolving Loans	0
Total	0
Other loans | A Credit Rating
Loan-to-Value Ratio:
2025	0
2024	0
2023	0
2022	79
2021	0
Prior	0
Revolving Loans	0
Total	79
Other loans | AA Credit Rating
Loan-to-Value Ratio:
2025	0
2024	0
2023	0
2022	8
2021	3
Prior	0
Revolving Loans	0
Total	11
Other loans | BBB Credit Rating
Loan-to-Value Ratio:
2025	0
2024	184
2023	68
2022	27
2021	0
Prior	0
Revolving Loans	0
Total	279
Other loans | BB Credit Rating
Loan-to-Value Ratio:
2025	0
2024	0
2023	0
2022	0
2021	0
Prior	0
Revolving Loans	0
Total	$ 0