FAIR VALUE DISCLOSURES - Fair Value Measurement Reconciliation For All Levels (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Total gains (losses), realized and unrealized, included in:
Investment gains (losses), net			$ 243	$ (20)
Transfers into level 3			219	14
Transfers out of Level 3			(103)	(73)
Corporate
Total gains (losses), realized and unrealized, included in:
Other comprehensive income (loss)			(54)	10
States and political subdivisions
Total gains (losses), realized and unrealized, included in:
Other comprehensive income (loss)			2	2
Asset- backed
Total gains (losses), realized and unrealized, included in:
Other comprehensive income (loss)				5
GMIB Reinsurance Contract Asset
Total gains (losses), realized and unrealized, included in:
Other comprehensive income (loss)			0	0
Level 3 | Corporate
Total gains (losses), realized and unrealized, included in:
Beginning Balance	$ 1,174	$ 1,169	1,246	1,174
Net investment income (loss)	1	2	2	3
Investment gains (losses), net	(11)	0	(13)	0
Subtotal	(10)	2	(11)	3
Other comprehensive income (loss)	6	1	(54)	10
Purchases	284	151	345	221
Sales	(44)	(26)	(90)	(59)
Transfers into level 3	219	(3)	219	14
Transfers out of Level 3	23	(4)	(3)	(73)
Closing Balance	1,652	1,290	1,652	1,290
Level 3 | States and political subdivisions
Total gains (losses), realized and unrealized, included in:
Beginning Balance	36	39	39	38
Net investment income (loss)	0	0	0	0
Investment gains (losses), net	0	0	0	0
Subtotal	0	0	0	0
Other comprehensive income (loss)	5	1	2	2
Purchases	0	0	0	0
Sales	(1)	(1)	(1)	(1)
Transfers into level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Closing Balance	40	39	40	39
Level 3 | Asset- backed
Total gains (losses), realized and unrealized, included in:
Beginning Balance	40	534	100	519
Net investment income (loss)	0	0	0	0
Investment gains (losses), net	0	0	0	0
Subtotal	0	0	0	0
Other comprehensive income (loss)	8	1	0	5
Purchases	(48)	(1)	0	10
Sales	0	0	0	0
Transfers into level 3	0	0	0	0
Transfers out of Level 3	0	0	(100)	0
Closing Balance	0	534	0	534
Level 3 | Other equity investments
Total gains (losses), realized and unrealized, included in:
Beginning Balance	15	18	16	48
Net investment income (loss)	0	0	0	0
Net derivative gains (losses), excluding non-performance risk	0	0	0	0
Nonperformance risk	0	0	0	0
Subtotal	0	0	0	0
Other comprehensive income (loss)	0	0	0	0
Purchases	1	0	1	0
Sales	0	0	0	0
Settlements	0	0	0	0
Change in estimate	0	(2)	0	(3)
Activity related to consolidated VIEs/VOEs	0	0	(1)	0
Transfers into level 3	0	0	0	(29)
Transfers out of Level 3	0	16	0
Closing Balance	16	16	16	16
Level 3 | GMIB Reinsurance Contract Asset
Total gains (losses), realized and unrealized, included in:
Beginning Balance	3,305	2,009	2,466	1,991
Net investment income (loss)	0	0	0	0
Net derivative gains (losses), excluding non-performance risk	(139)	178	1,082	165
Nonperformance risk	272	12	(56)	52
Subtotal	133	190	1,026	217
Other comprehensive income (loss)	0	0		0
Purchases	12	11	23	23
Sales	(17)	(14)	(37)	(35)
Settlements	0	0	0	0
Change in estimate	0	0	(45)	0
Activity related to consolidated VIEs/VOEs	0	0	0	0
Transfers into level 3	0	0	0	0
Transfers out of Level 3	0	2,196	0
Closing Balance	3,433	2,196	3,433	2,196
Level 3 | Separate Accounts Assets
Total gains (losses), realized and unrealized, included in:
Beginning Balance	0	23	0	21
Net investment income (loss)	0	0	0	0
Net derivative gains (losses), excluding non-performance risk	0	0	0	0
Nonperformance risk	0	0	0	0
Subtotal	0	0	0	0
Other comprehensive income (loss)	0	0		0
Purchases	0	3	0	8
Sales	0	0	0	0
Settlements	0	(2)	0	(3)
Change in estimate	0	0	0	0
Activity related to consolidated VIEs/VOEs	0	0	0	0
Transfers into level 3	0	0	0	(1)
Transfers out of Level 3	0	24	0
Closing Balance	0	25	0	25
Level 3 | GMxB Derivative Features Liability
Total gains (losses), realized and unrealized, included in:
Beginning Balance	(9,509)	(5,944)	(8,246)	(5,431)
Net investment income (loss)	0	0	0	0
Net derivative gains (losses), excluding non-performance risk	(370)	(707)	(4,440)	(656)
Nonperformance risk	(2,411)	0	494	(460)
Subtotal	(2,781)	(707)	(3,946)	(1,116)
Other comprehensive income (loss)	0	0		0
Purchases	(107)	(103)	(215)	(210)
Sales	15	5	25	8
Settlements	0	0	0	0
Change in estimate	0	0	0	0
Activity related to consolidated VIEs/VOEs	0	0	0	0
Transfers into level 3	0	0	0	0
Transfers out of Level 3	0	(6,749)	0
Closing Balance	$ (12,382)	$ (6,749)	$ (12,382)	$ (6,749)