DISCONTINUED OPERATIONS - Income Statement Disclosures (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net derivative gains (losses)	$ (1,541)	$ (3,831)	$ (1,034)
Net investment income (loss)	3,208	3,298	2,478
Investment management and service fees	1,010	1,022	1,029
Other income	57	56	64
Total revenues	7,791	5,174	6,918
Compensation and benefits	309	335	422
Commissions and distribution related payments	636	629	625
Interest expense	0	4	34
Other operating costs and expenses	830	912	2,919
Total benefits and other deductions	9,177	7,637	8,390
Net income (loss) from discontinued operations, net of taxes	0	0	114
Less: Net (income) loss attributable to the noncontrolling interest	0	(5)	3
Net income (loss) attributable to Equitable Financial	$ (759)	$ (1,889)	(899)
Alliance Bernstein | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net derivative gains (losses)			12
Net investment income (loss)			24
Investment management and service fees			3,243
Other income			0
Total revenues			3,279
Compensation and benefits			1,370
Commissions and distribution related payments			427
Interest expense			8
Other operating costs and expenses			727
Total benefits and other deductions			2,532
Income (loss) from discontinued operations, before income taxes			747
Income tax (expense) benefit			(69)
Net income (loss) from discontinued operations, net of taxes			678
Less: Net (income) loss attributable to the noncontrolling interest			(564)
Net income (loss) attributable to Equitable Financial			$ 114