Debt (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2023 USD ($) lineOfCredit financialInstitution	Dec. 31, 2022 USD ($)	Sep. 01, 2020 USD ($)
Line of Credit
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	$ 800,000,000
Maximum incremental increase	200,000,000
Amount outstanding	0	$ 0
Line of Credit | Subsidiaries
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	$ 315,000,000
Number of uncommitted lines of credit | lineOfCredit	5
Number of financial institutions offering lines of credit | financialInstitution	5
Number of financial institutions with stated limits | lineOfCredit	4
Commercial Paper
Short-term Debt [Line Items]
Weighted average interest rates on average daily borrowings (as percent)	4.70%	1.50%
Short-term debt	$ 0	$ 0
Short-term debt, average outstanding amount	$ 339,500,000	$ 189,900,000
Uncommited Lines of Credit
Short-term Debt [Line Items]
Weighted average interest rates (as percent)	7.70%	3.70%
Short-term debt	$ 0	$ 0
Short-term debt, average outstanding amount	$ 3,700,000	$ 1,400,000
Equitable Holdings, Inc. And Subsidiaries
Short-term Debt [Line Items]
Weighted average interest rates on average daily borrowings (as percent)	4.50%	4.30%
Short-term debt, average outstanding amount	$ 7,000,000	$ 700,000
EQH
Short-term Debt [Line Items]
Amount outstanding	$ 900,000,000	$ 900,000,000
Weighted average interest rates (as percent)	4.70%	4.30%
Average daily borrowings	$ 804,100,000	$ 655,200,000
Weighted average interest rates on average daily borrowings (as percent)	4.40%	1.70%
EQH | Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	$ 900,000,000
EQH Uncommitted Facility
Short-term Debt [Line Items]
Weighted average interest rates (as percent)	4.70%	4.30%
EQH Uncommitted Facility | Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity			$ 300,000,000
Amount outstanding	$ 135,000,000	$ 90,000,000