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RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	May 14, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Dividends		$ 61
Equitable Financial Services, LLC (EFS) \| Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party		132	$ 133	$ 133
Equitable Network, LLC \| Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party		136	90	106
Equitable Distributors, LLC \| Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party		59	55	52
Alliance Bernstein \| Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party		$ 2	2	2
EQ AZ Life Re \| Affiliated Entity
Related Party Transaction [Line Items]
Reinsurance, quota, percentage		90.00%
Ceded premiums		$ 7	$ 6	$ 5
Equitable Holdings Inc \| Affiliated Entity \| Letter of Credit
Related Party Transaction [Line Items]
Long-term line of credit		$ 45
Alliance Bernstein \| Equitable Financial Services, LLC (EFS) \| Affiliated Entity
Related Party Transaction [Line Items]
Dividends	$ 61