INVESTMENTS - Other Loans by Key Credit Quality Indicators (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Credit Ratings:
Total	$ 10,559	$ 11,224
Other loans
Credit Ratings:
2025	6
2024	232
2023	69
2022	103
2021	3
Prior	0
Revolving Loans	0
Total	413	$ 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
Credit Ratings:
2025	0
2024	0
2023	0
2022	70
2021	0
Prior	0
Revolving Loans	0
Total	70
Other loans | AA Credit Rating
Credit Ratings:
2025	0
2024	0
2023	0
2022	8
2021	3
Prior	0
Revolving Loans	0
Total	11
Other loans | BBB Credit Rating
Credit Ratings:
2025	6
2024	232
2023	69
2022	25
2021	0
Prior	0
Revolving Loans	0
Total	$ 332