INVESTMENTS - Contractual and Economic Maturities of Investments in Fixed Maturities (Detail) - USD ($) $ in Millions		Mar. 31, 2023		Dec. 31, 2022
Available for sale:
Due in one year or less	[1]	$ 1,690
Due after one year through five years	[1]	6,964
Due after five years through 10 years	[1]	15,878
Due after 10 years	[1]	48,230
Mortgage- and asset-backed securities	[1]	2,544
Total fixed maturity securities, available for sale, amortized cost	[1]	75,306
Held to maturity:
Due in one year or less	[1]	0
Due after one year through five years	[1]	40
Due after five years through 10 years	[1]	10,067
Due after 10 years	[1]	8,829
Mortgage- and asset-backed securities	[1]	0
Total fixed maturity securities, held to maturity, amortized cost		18,936	[1]	$ 19,056
Available for sale:
Due in one year or less		1,765
Due after one year through five years		7,350
Due after five years through 10 years		17,289
Due after 10 years		49,128
Mortgage- and asset-backed securities		2,567
Fair Value		78,099		75,741
Held to maturity:
Due in one year or less		0
Due after one year through five years		42
Due after five years through 10 years		11,271
Due after 10 years		10,303
Mortgage- and asset-backed securities		0
Fair Value		$ 21,616		$ 21,210

[1] Net of allowance for credit losses