SIGNIFICANT ACCOUNTING POLICIES - Summary of Adjustments on Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015	Dec. 31, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Deferred policy acquisition costs	$ 4,141	$ 4,256		$ 4,484
Amounts due from reinsurers	4,870	4,635		4,487
Guaranteed minimum income benefit reinsurance contract asset, at fair value	11,290	10,309		10,578
Other assets	4,594	4,260		4,647
Total Assets	214,941	203,719		194,683
Policyholders’ account balances	41,531	38,842		32,913
Future policy benefits and other policyholders’ liabilities	26,799	25,435		24,827
Current and deferred income taxes	4,000	3,753		4,661
Other liabilities	2,531	2,108		2,534
Total liabilities	196,972	187,019		177,156
Retained earnings	8,779	7,864		8,904
Total AXA Equitable’s equity	14,635	13,212		14,455
Noncontrolling interest	2,973	3,085		3,059
Equity	17,608	16,297	$ 20,976	17,514	$ 18,001
Total Liabilities and Equity	$ 214,941	203,719		194,683
As previously reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Deferred policy acquisition costs		4,301		4,469
Amounts due from reinsurers		4,635		4,466
Guaranteed minimum income benefit reinsurance contract asset, at fair value		10,309		10,570
Other assets		4,260		4,634
Total Assets		203,764		194,626
Policyholders’ account balances		38,782		33,033
Future policy benefits and other policyholders’ liabilities		25,358		24,531
Current and deferred income taxes		3,816		4,647
Other liabilities		2,108		2,586
Total liabilities		186,945		177,018
Retained earnings		7,983		8,958
Total AXA Equitable’s equity		13,331		14,509
Noncontrolling interest		3,085		3,086
Equity		16,416	21,013	17,595	18,108
Total Liabilities and Equity		203,764		194,626
Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Deferred policy acquisition costs		(45)		15
Amounts due from reinsurers		0		21
Guaranteed minimum income benefit reinsurance contract asset, at fair value		0		8
Other assets		0		13
Total Assets		(45)		57
Policyholders’ account balances		60		(120)
Future policy benefits and other policyholders’ liabilities		77		296
Current and deferred income taxes		(63)		14
Other liabilities		0		(52)
Total liabilities		74		138
Retained earnings		(119)		(54)
Total AXA Equitable’s equity		(119)		(54)
Noncontrolling interest		0		(27)
Equity		(119)	$ (37)	(81)	$ (107)
Total Liabilities and Equity		$ (45)		$ 57