Premiums assumed and earned by an affiliated insurer as a result of reinsurance arrangements.

No definition available.

Name:	axaeq_CededPremiumsEarnedAffiliated
Namespace Prefix:	axaeq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Disposal Group, Held-for-sale, Number Of Real Estate Joint Ventures Sold

+ References

No definition available.

+ Details

Name:	axaeq_DisposalGroupHeldforsaleNumberOfRealEstateJointVenturesSold
Namespace Prefix:	axaeq_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Gain (Loss) On Disposition Of Joint Venture

+ References

No definition available.

+ Details

Name:	axaeq_GainLossOnDispositionOfJointVenture
Namespace Prefix:	axaeq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represent the guaranteed minimum income benefit reinsurance contract asset reported at fair value

+ References

No definition available.

+ Details

Name:	axaeq_GuaranteedMinimumIncomeBenefitReinsuranceContractAssetAtFairValue
Namespace Prefix:	axaeq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reduction In Long Term Debt Due To Sale Of Joint Venture

+ References

No definition available.

+ Details

Name:	axaeq_ReductionInLongTermDebtDueToSaleOfJointVenture
Namespace Prefix:	axaeq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The reduction in the amount of the provision for the period for claims and benefits incurred on contract risks ceded to affiliated insurers under reinsurance arrangements.

+ References

No definition available.

+ Details

Name:	axaeq_ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCededToAffiliates
Namespace Prefix:	axaeq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_EquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireEquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Aggregate cash proceeds received from a combination of transactions in which noncurrent assets are sold, which may include the sale of a business, an investment in an affiliate (including an equity method investee), property, plant and equipment and intangible assets. Excludes sales of trading, available-for-sale, and held-to-maturity securities.

+ References

No definition available.

+ Details

Name:	us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=axaeq_AxaArizonaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=axaeq_AxaEquitableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=axaeq_BroadVistaPartnersLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=axaeq_SaumSingMember
Namespace Prefix:
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RELATED PARTY TRANSACTIONS (Details) $ in Millions		1 Months Ended	3 Months Ended
RELATED PARTY TRANSACTIONS (Details) $ in Millions	Jun. 30, 2016 USD ($)	Mar. 31, 2018 USD ($) joint_venture	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016
Related Party Transaction [Line Items]
GMIB reinsurance contract asset, at fair value		$ 9,673.0	$ 9,673.0	$ 9,798.0	$ 10,488.0
Number of real estate joint ventures sold \| joint_venture		2
Total purchase price		$ 143.0
Pre-tax loss on sale of real estate joint venture		0.2
Elimination of long-term debt		203.0
AXA RE Arizona
Related Party Transaction [Line Items]
GMIB reinsurance contract asset, at fair value		7,939.0	7,939.0		$ 8,594.0
Ceded premiums earned affiliated			110.0	109.0
Reinsurance effect on claims and benefits incurred amount ceded to affiliates			66.0	$ 49.0
AXA Equitable
Related Party Transaction [Line Items]
Equity method investment, ownership percentage						70.00%
AXA Equitable \| Broad Vista
Related Party Transaction [Line Items]
Amount invested	$ 25.0
Investment in affiliate		$ 36.0	$ 36.0
Saum Sing
Related Party Transaction [Line Items]
Equity method investment, ownership percentage						30.00%