INVESTMENTS - Middle Market Loans by Key Credit Quality Indicators (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Loan-to-Value Ratio:
Total	$ 10,191	$ 11,224
Middle market loans
Loan-to-Value Ratio:
2025	704
2024	679
2023	122
2022	633
2021	821
Prior	1,293
Revolving Loans	152
Total	4,404	$ 4,423
Current-period gross writeoffs:
2025	0
2024	0
2023	0
2022	7
2021	29
Prior	55
Revolving Loans	0
Total	91
Middle market loans | BBB Credit Rating
Loan-to-Value Ratio:
2025	31
2024	52
2023	36
2022	0
2021	57
Prior	106
Revolving Loans	15
Total	297
Middle market loans | BB Credit Rating
Loan-to-Value Ratio:
2025	452
2024	473
2023	40
2022	331
2021	285
Prior	552
Revolving Loans	72
Total	2,205
Middle market loans | B Credit Rating
Loan-to-Value Ratio:
2025	194
2024	149
2023	46
2022	284
2021	388
Prior	360
Revolving Loans	39
Total	1,460
Middle market loans | CCC Credit Rating
Loan-to-Value Ratio:
2025	22
2024	3
2023	0
2022	9
2021	59
Prior	196
Revolving Loans	16
Total	305
Middle market loans | CC Credit Rating
Loan-to-Value Ratio:
2025	5
2024	2
2023	0
2022	9
2021	16
Prior	17
Revolving Loans	5
Total	54
Middle market loans | C and Lower Credit Rating
Loan-to-Value Ratio:
2025	0
2024	0
2023	0
2022	0
2021	16
Prior	62
Revolving Loans	5
Total	$ 83