INVESTMENTS - Components of Net Investment Income (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income		$ 3,882	$ 4,036	$ 3,850
Less investment expenses		226	218	212
Net investment income		3,656	3,818	3,638
Corporate and other
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Net investment income		30	(73)	80
Change in value of federal historic rehabilitation and solar tax credit investments		(91)	(138)
Federal historic rehabilitation and solar tax credits, amount		83	115
Fixed maturity securities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income		2,926	3,068	3,113
Equity securities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income		31	35	29
Commercial mortgage and other loans
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income		716	570	545
Other investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income	[1]	131	356	145
Short-term investments and cash equivalents
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gross investment income		$ 78	$ 7	$ 18

[1] The change in value of federal historic rehabilitation and solar investments in partnerships of $91 in 2022 and $138 in 2021 is included as a reduction to net investment income. Tax credits on these investments of $83 in 2022 and $115 in 2021 have been recorded as an income tax benefit in the consolidated statement of earnings.