INVESTMENTS - Nonaccrual Loans (Detail) - USD ($) $ in Millions	Dec. 31, 2025		Dec. 31, 2024
Financing Receivable, Past Due [Line Items]
Total	$ 10,191		$ 11,224
Total. nonaccrual status	643		486
Total, 90 days or more past due and still accruing interest	0		0
Transitional real estate loans
Financing Receivable, Past Due [Line Items]
Total	3,888		4,902
Total. nonaccrual status	545		378
Commercial mortgage loans
Financing Receivable, Past Due [Line Items]
Total	1,452		1,537
Total. nonaccrual status	0		0
Middle market loans
Financing Receivable, Past Due [Line Items]
Total	4,404		4,423
Total. nonaccrual status	98		108
Other loans
Financing Receivable, Past Due [Line Items]
Total	447		362
Total. nonaccrual status	0		0
Current
Financing Receivable, Past Due [Line Items]
Total	9,580		10,558
Current | Transitional real estate loans
Financing Receivable, Past Due [Line Items]
Total	3,418		4,364
Current | Commercial mortgage loans
Financing Receivable, Past Due [Line Items]
Total	1,452		1,537
Current | Middle market loans
Financing Receivable, Past Due [Line Items]
Total	4,263		4,295
Current | Other loans
Financing Receivable, Past Due [Line Items]
Total	447		362
Less Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	58		258
Less Than 90 Days Past Due | Transitional real estate loans
Financing Receivable, Past Due [Line Items]
Total	0		195
Less Than 90 Days Past Due | Commercial mortgage loans
Financing Receivable, Past Due [Line Items]
Total	0		0
Less Than 90 Days Past Due | Middle market loans
Financing Receivable, Past Due [Line Items]
Total	58		63
Less Than 90 Days Past Due | Other loans
Financing Receivable, Past Due [Line Items]
Total	0		0
90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total	553		408	[1]
90 Days or More Past Due | Transitional real estate loans
Financing Receivable, Past Due [Line Items]
Total	470	[2]	343	[1]
90 Days or More Past Due | Commercial mortgage loans
Financing Receivable, Past Due [Line Items]
Total	0	[2]	0	[1]
90 Days or More Past Due | Middle market loans
Financing Receivable, Past Due [Line Items]
Total	83	[2]	65	[1]
90 Days or More Past Due | Other loans
Financing Receivable, Past Due [Line Items]
Total	0	[2]	0	[1]
Total Past Due
Financing Receivable, Past Due [Line Items]
Total	611		666
Total Past Due | Transitional real estate loans
Financing Receivable, Past Due [Line Items]
Total	470		538
Total Past Due | Commercial mortgage loans
Financing Receivable, Past Due [Line Items]
Total	0		0
Total Past Due | Middle market loans
Financing Receivable, Past Due [Line Items]
Total	141		128
Total Past Due | Other loans
Financing Receivable, Past Due [Line Items]
Total	$ 0		$ 0

[1] As of December 31, 2024, there were no loans that were 90 days or more past due that continued to accrue interest.

[2] As of December 31, 2025, there were no loans that were 90 days or more past due that continued to accrue interest.