INVESTMENTS - Contractual and Economic Maturities of Investments in Fixed Maturities (Detail) - USD ($) $ in Millions		Mar. 31, 2022		Dec. 31, 2021
Available for sale:
Due in one year or less	[1]	$ 1,335
Due after one year through five years	[1]	7,876
Due after five years through 10 years	[1]	12,472
Due after 10 years	[1]	58,446
Mortgage- and asset-backed securities	[1]	1,335
Total fixed maturity securities, available for sale, amortized cost	[1]	81,464
Held to maturity:
Due in one year or less	[1]	0
Due after one year through five years	[1]	41
Due after five years through 10 years	[1]	10,846
Due after 10 years	[1]	9,785
Mortgage- and asset-backed securities	[1]	0
Total fixed maturity securities, held to maturity, amortized cost		20,672	[1]	$ 22,000
Available for sale:
Due in one year or less		1,427
Due after one year through five years		8,406
Due after five years through 10 years		14,056
Due after 10 years		64,710
Mortgage- and asset-backed securities		1,366
Total fixed maturity securities, available for sale, fair value		89,965		98,696
Held to maturity:
Due in one year or less		0
Due after one year through five years		44
Due after five years through 10 years		12,429
Due after 10 years		12,112
Mortgage- and asset-backed securities		0
Total fixed maturity securities, held to maturity, fair value		$ 24,585		$ 26,869

[1] Net of allowance for credit losses