INVESTMENTS - Contractual and Economic Maturities of Investments in Fixed Maturities (Detail) - USD ($) $ in Millions		Mar. 31, 2025		Dec. 31, 2024
Available for sale:
Due in one year or less	[1]	$ 1,572
Due after one year through five years	[1]	8,158
Due after five years through 10 years	[1]	15,563
Due after 10 years	[1]	38,336
Mortgage- and asset-backed securities	[1]	3,916
Total fixed maturity securities, available-for-sale, amortized cost	[1]	67,545
Held to maturity:
Due in one year or less	[1]	33
Due after one year through five years	[1]	2
Due after five years through 10 years	[1]	9,008
Due after 10 years	[1]	7,845
Total fixed maturity securities, held-to- maturity, amortized cost		16,888	[1]	$ 15,966
Available for sale:
Due in one year or less		1,728
Due after one year through five years		8,943
Due after five years through 10 years		16,267
Due after 10 years		36,158
Mortgage- and asset-backed securities		4,048
Fair Value		67,144		65,269
Held to maturity:
Due in one year or less		35
Due after one year through five years		2
Due after five years through 10 years		9,346
Due after 10 years		7,752
Fair Value		$ 17,135		$ 16,772

[1] Net of allowance for credit losses