BUSINESS SEGMENT INFORMATION - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Net income (loss)	$ (4,028)	$ 363	$ 1,382	$ (412)
Adjustments related to:
Non-GAAP Operating Earnings	459	559	974	1,068
Interest expense	48	57	100	113
Adjustments
Segment Reporting Information [Line Items]
Net income (loss)	(4,028)	363	1,382	(412)
Adjustments related to:
Variable annuity product features	5,727	200	(1,134)	1,740
Investment (gains) losses	(169)	12	(173)	23
Net actuarial (gains) losses related to pension and other postretirement benefit obligations	28	24	55	48
Other adjustments	91	89	725	129
Income tax expense (benefit) related to above adjustments	(1,192)	(71)	111	(408)
Non-recurring tax items	2	(58)	8	(52)
COVID Impact on VA product feature due to assumption updates			1,500
Other COVID-19 impact			35
Other assumption updates due to COVID-19			988
Other COVID-19 impact	52		103
Separation costs	39	58	71	82
COVID-19 impact on taxes	11		545
Operating Segments | Individual Retirement
Adjustments related to:
Non-GAAP Operating Earnings	350	359	722	729
Operating Segments | Group Retirement
Adjustments related to:
Non-GAAP Operating Earnings	90	95	196	176
Operating Segments | Investment Management and Research
Adjustments related to:
Non-GAAP Operating Earnings	92	80	187	157
Operating Segments | Protection Solutions
Adjustments related to:
Non-GAAP Operating Earnings	(12)	106	26	155
Corporate and Other
Adjustments related to:
Non-GAAP Operating Earnings	(61)	(81)	(157)	(149)
Interest expense	$ 52	$ 59	$ 108	$ 111