SIGNIFICANT ACCOUNTING POLICIES - Schedule of Deferred Policy Acquisition Costs (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022	Jan. 01, 2021	Dec. 31, 2020
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC	$ 4,817	$ 4,814		$ 4,098
Closed block liabilities	5,728	5,760
Previously Reported
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				3,771
Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC			$ 467	327
Closed block liabilities				136
Protection Solutions | Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				3
Term | Protection Solutions
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC	356	362		403
Term | Protection Solutions | Previously Reported
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				403
Term | Protection Solutions | Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				0
UL | Protection Solutions
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC	21	20		5
UL | Protection Solutions | Previously Reported
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				0
UL | Protection Solutions | Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				5
VUL | Protection Solutions
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC	127	112		6
VUL | Protection Solutions | Previously Reported
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				0
VUL | Protection Solutions | Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				6
IUL | Protection Solutions
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC	0	0		0
IUL | Protection Solutions | Previously Reported
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				0
IUL | Protection Solutions | Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				0
GMxB Legacy | Legacy Segment
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC	214	127		200
GMxB Legacy | Legacy Segment | Previously Reported
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				192
GMxB Legacy | Legacy Segment | Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				8
GMxB Core | Individual Retirement
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC	1,561	1,585		1,646
GMxB Core | Individual Retirement | Previously Reported
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				1,635
GMxB Core | Individual Retirement | Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				11
EQUI-VEST Individual | Individual Retirement
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC	156	156		154
EQUI-VEST Individual | Individual Retirement | Previously Reported
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				141
EQUI-VEST Individual | Individual Retirement | Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				13
Investment Edge | Individual Retirement
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC	150	147		94
Investment Edge | Individual Retirement | Previously Reported
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				95
Investment Edge | Individual Retirement | Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				(1)
SCS | Individual Retirement
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				855
SCS | Individual Retirement | Previously Reported
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				645
SCS | Individual Retirement | Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				210
EQUI-VEST Group | Group Retirement
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC	716	711		634
EQUI-VEST Group | Group Retirement | Previously Reported
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				581
EQUI-VEST Group | Group Retirement | Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				53
Momentum | Group Retirement
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC	$ 87	$ 89		101
Momentum | Group Retirement | Previously Reported
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				79
Momentum | Group Retirement | Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
DAC				$ 22