INVESTMENTS - Nonaccrual Loans (Detail) - USD ($) $ in Millions	Dec. 31, 2024		Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Total	$ 11,224		$ 12,801
Loans on nonaccrual status	486		718
Loans 90 days or more past due and still accruing interest	0		0
Current
Financing Receivable, Past Due [Line Items]
Total	10,558		12,050
Less Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	258		141
90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total	408		610	[1]
Total Past Due
Financing Receivable, Past Due [Line Items]
Total	666		751
Transitional real estate loans
Financing Receivable, Past Due [Line Items]
Total	4,902		6,114
Loans on nonaccrual status	378		633
Transitional real estate loans | Current
Financing Receivable, Past Due [Line Items]
Total	4,364		5,481
Transitional real estate loans | Less Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	195		108
Transitional real estate loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total	343	[2]	525	[1]
Transitional real estate loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	538		633
Commercial mortgage loans
Financing Receivable, Past Due [Line Items]
Total	1,537		1,709
Loans on nonaccrual status	0		0
Commercial mortgage loans | Current
Financing Receivable, Past Due [Line Items]
Total	1,537		1,676
Commercial mortgage loans | Less Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	0		33
Commercial mortgage loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total	0	[2]	0	[1]
Commercial mortgage loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	0		33
Middle market loans
Financing Receivable, Past Due [Line Items]
Total	4,423		4,677
Loans on nonaccrual status	108		85
Middle market loans | Current
Financing Receivable, Past Due [Line Items]
Total	4,295		4,592
Middle market loans | Less Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	63		0
Middle market loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total	65	[2]	85	[1]
Middle market loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	128		85
Other loans
Financing Receivable, Past Due [Line Items]
Total	362		301
Loans on nonaccrual status	0		0
Other loans | Current
Financing Receivable, Past Due [Line Items]
Total	362		301
Other loans | Less Than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	0		0
Other loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Total	0	[2]	0	[1]
Other loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	$ 0		$ 0

[1] As of December 31, 2023, there were no loans that were 90 days or more past due that continued to accrue interest.

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