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INVESTMENTS - Equity Securities (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract] |  |
Net investment gains (losses) recognized during the period on securities held at the end of the period | $ (3) | $ (40)
Net investment gains (losses) recognized on securities sold during the period | 0 | (13)
Unrealized and realized gains (losses) on equity securities | $ (3) | $ (53)

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- Definition Net Investment Income (Loss), Equity Securities, Change in Unrealized Holding Gain (Loss) + References No definition available. + Details
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Namespace Prefix: | eqh_
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Balance Type: | credit
Period Type: | duration

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- Definition Net Realized and Unrealized Gain (Loss) on Equity Securities + References No definition available. + Details
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Namespace Prefix: | eqh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117546-209714 + Details
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Period Type: | duration

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- References No definition available. + Details
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