INVESTMENTS - Contractual and Economic Maturities of Investments in Fixed Maturities (Detail) - USD ($) $ in Millions		Sep. 30, 2023		Dec. 31, 2022
Available for sale:
Due in one year or less	[1]	$ 1,835
Due after one year through five years	[1]	6,385
Due after five years through 10 years	[1]	16,998
Due after 10 years	[1]	41,096
Mortgage- and asset-backed securities	[1]	2,847
Total fixed maturity securities, available-for-sale, amortized cost	[1]	69,161
Held to maturity:
Due in one year or less	[1]	0
Due after one year through five years	[1]	35
Due after five years through 10 years	[1]	9,014
Due after 10 years	[1]	7,850
Mortgage- and asset-backed securities	[1]	0
Total fixed maturity securities, held-to- maturity, amortized cost		16,899	[1]	$ 19,056
Available for sale:
Due in one year or less		1,871
Due after one year through five years		6,920
Due after five years through 10 years		18,432
Due after 10 years		39,582
Mortgage- and asset-backed securities		2,996
Fair Value		69,801		75,741
Held to maturity:
Due in one year or less		0
Due after one year through five years		37
Due after five years through 10 years		9,815
Due after 10 years		8,608
Mortgage- and asset-backed securities		0
Fair Value		$ 18,460		$ 21,210

[1] Net of allowance for credit losses