Debt (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2025 USD ($) lineOfCredit financialInstitution	Dec. 31, 2024 USD ($)
Short-term Debt [Line Items]
Proceeds from debt, net	$ 30,000,000
Line of Credit
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	800,000,000.0
Maximum incremental increase	200,000,000
Amount outstanding	0	$ 0
Proceeds from debt, net	0	0
Line of Credit | Subsidiaries
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	$ 150,000,000.0
Number of uncommitted lines of credit | lineOfCredit	3
Number of financial institutions offering lines of credit | financialInstitution	3
Number of financial institutions with stated limits | lineOfCredit	2
Equitable Holdings, Inc. And Subsidiaries
Short-term Debt [Line Items]
Short-term debt, average outstanding amount	$ 0	$ 0
Commercial Paper
Short-term Debt [Line Items]
Weighted average interest rates on average daily borrowings (as percent)	4.50%	5.40%
Short-term debt, average outstanding amount	$ 182,800,000	$ 268,200,000
Short-term debt	$ 0	$ 0
Uncommited Lines of Credit
Short-term Debt [Line Items]
Weighted average interest rates (as percent)	7.50%	8.50%
Short-term debt, average outstanding amount	$ 700,000	$ 600,000
Short-term debt	0	0
EQH
Short-term Debt [Line Items]
Amount outstanding	$ 740,000,000.0	$ 710,000,000
Weighted average interest rates (as percent)	4.30%	4.30%
Average daily borrowings	$ 409,400,000	$ 494,200,000
Weighted average interest rates on average daily borrowings (as percent)	4.30%	5.20%
EQH | Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	$ 900,000,000.0
EQH Uncommitted Facility | Revolving Credit Facility
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	300,000,000
Amount outstanding	$ 0	$ 0