SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Impact from Adoption on Balance Sheet (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020	Jan. 01, 2021
Retained earnings	$ 44,568		$ 41,381
Net earnings	4,201		4,325		$ 4,778
Accounting Standards Update 2018-12 | Pro Forma
Retained earnings	44,367	[1]	40,963	[2]
Net earnings	4,418		4,231
Effect of changes in discount rate assumptions	(2,100)	[3]	(15,832)	[4]
Accounting Standards Update 2018-12 | Pro Forma | Cumulative effect, period of adoption, adjustment
Retained earnings						$ (300)
Accounting Standards Update 2018-12 | Adoption Impacts | Pro Forma
Retained earnings	(201)	[1]	(418)	[2]
Net earnings	217		(94)
Effect of changes in discount rate assumptions	(2,100)	[3]	(15,832)	[4]
Effect of changes in discount rate assumptions during period, net of income taxes	$ 13,732		$ 2,738
Accounting Standards Update 2018-12 | Adoption Impacts | Pro Forma | Cumulative effect, period of adoption, adjustment
Retained earnings						(324)
Effect of changes in discount rate assumptions						$ (18,570)

[1] Adjustment reflects the cumulative impact from adoption and post-adoption activity under the updated standard, including the increase in 2022 net earnings of $217.

[2] Adjustment reflects the impacts from adoption of ($324) as a result of capping the net premium ratio at 100% for cohorts that are in a loss position at transition and post-adoption activity under the updated standard, including the decrease in 2021 net earnings of $(94).

[3] Adjustment reflects the cumulative impact from adoption and post-adoption activity under the updated standard, including an increase of $13,732 in 2022 due to changes in the discount rate assumptions.

[4] Adjustment reflects the impacts from adoption of ($18,570) and post-adoption activity under the updated standard, including $2,738 in 2021 due to changes in the discount rate assumptions