INVESTMENTS - Additional Information (Detail) $ in Millions		12 Months Ended
		Dec. 31, 2025 USD ($) investment	Dec. 31, 2024 USD ($) investment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Schedule of Investments [Line Items]
Held to maturity securities transferred to available for sale securities, number of investments | investment		0	0
Real estate owned impairments		$ 6	$ 0	$ 0
Real estate owned, estimated fair value after impairment		12
Equity securities, FV-NI, unrealized gain (loss)		46	118	63
Transitional real estate loan commitments		140
Middle market loan commitments		704
Other loans commitments		1
Nonaccrual loans, interest income		2	2	0
Financing receivable, modified, commitment to lend		15	14
Financing receivable, allowance for credit loss		426	355
Fixed maturity securities, held-to-maturity, amortized cost		16,125	15,971
Real estate owned, accumulated depreciation		41	14
Limited partnerships investment commitments		3,000	2,800
Securities lending, securities received as collateral		2,200	3,000
Repurchase agreements and repurchase to maturity transactions outstanding		0	0
Fair value of debt securities on deposit with regulatory authorities in the United States		20
Variable Interest Entity, Not Consolidated
Schedule of Investments [Line Items]
Limited partnerships investment commitments		2,100	2,100
Real estate owned
Schedule of Investments [Line Items]
Real estate owned, depreciation expense		29	13
Transitional real estate loans
Schedule of Investments [Line Items]
Nonaccrual loans, no allowance		30	140
Financing receivable, allowance for credit loss		277	199	112	$ 54
Transitional real estate loans | Term extension and interest rate reduction
Schedule of Investments [Line Items]
Loan modification, amortized cost	[1]	178
Transitional real estate loans | Potential Foreclosure or Deed-in-lieu Foreclosure
Schedule of Investments [Line Items]
Loans in anticipation of potential foreclosure or deed in lieu of foreclosure		137
Financing receivable, allowance for credit loss		45
Middle market loans
Schedule of Investments [Line Items]
Nonaccrual loans, no allowance		36	5
Financing receivable, allowance for credit loss		$ 138	140	$ 146	$ 129
Middle market loans | Term extension and interest rate reduction
Schedule of Investments [Line Items]
Loan modification, amortized cost			$ 15
California | Geographic Concentration Risk | Mortgages
Schedule of Investments [Line Items]
Concentration Risk, Percentage		22.00%
Texas | Geographic Concentration Risk | Mortgages
Schedule of Investments [Line Items]
Concentration Risk, Percentage		13.00%
Florida | Geographic Concentration Risk | Mortgages
Schedule of Investments [Line Items]
Concentration Risk, Percentage		8.00%
Japan government and agencies | Zero-credit-loss expectation
Schedule of Investments [Line Items]
Fixed maturity securities, held-to-maturity, amortized cost		$ 15,300

[1] Net of allowance for credit losses