Debt (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2026 USD ($) lineOfCredit financialInstitution	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($) lineOfCredit financialInstitution
Debt Instrument [Line Items]
Proceeds from debt, net		$ 30,000,000
EQH
Debt Instrument [Line Items]
Amount outstanding	$ 705,000,000.0		$ 810,000,000.0
Weighted average interest rates	3.60%		3.70%
Average daily borrowings	$ 521,100,000		$ 392,200,000
Weighted average interest rates on average daily borrowings	3.60%		4.20%
Revolving Credit Facility | EQH
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 900,000,000.0
Revolving Credit Facility | EQH Uncommitted Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	300,000,000.0
Amount outstanding	0		$ 0
Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	800,000,000.0
Maximum incremental increase	200,000,000.0
Amount outstanding	0		0
Proceeds from debt, net	0		0
Line of Credit | Subsidiaries
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 100,000,000.0		$ 150,000,000
Number of uncommitted lines of credit | lineOfCredit	2		3
Number of financial institutions offering lines of credit | financialInstitution	2		3
Number of financial institutions with stated limits | lineOfCredit	1		2
Equitable Holdings, Inc. And Subsidiaries
Debt Instrument [Line Items]
Short-term debt, average outstanding amount	$ 0		$ 0
Commercial Paper
Debt Instrument [Line Items]
Weighted average interest rates on average daily borrowings	3.80%		4.40%
Short-term debt, average outstanding amount	$ 187,000,000.0		$ 199,500,000
Short-term debt	0		$ 0
Uncommited Lines of Credit
Debt Instrument [Line Items]
Weighted average interest rates			7.30%
Short-term debt, average outstanding amount	0		$ 500,000
Short-term debt	$ 0		$ 0