SIGNIFICANT ACCOUNTING POLICIES - Schedule of Restatements made to the Consolidated Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings (loss)	$ 1,459	$ 1,071	$ 1,146	$ 2,823	$ 506	$ 1,490	$ 4,286
Universal life and investment-type product policy fee income	(865)	(841)	(1,761)	(1,656)	(3,435)	(3,340)	(3,181)
Interest credited to policyholders’ account balances	393	325	941	570	1,655	906	1,077
Increase (decrease) in the fair value of the reinsurance contract asset	1,495	1,104	981	2,733	(269)	(141)	3,962
Amortization of deferred cost of reinsurance asset			(171)	64	159	121	278
Future policy benefits			1,388	1,303	718	1,001	2,013
Increase Decrease In Reinsurance Recoverable With Affiliate			251	270
Deferred policy acquisition costs			43	(74)	222	(313)	(374)
Amortization of deferred policy acquisition costs	$ (82)	(74)	43	(74)	222	(313)	(374)
Current and deferred income taxes			(16)	1,010	(850)	269	1,374
Accounts payable and accrued expenses				0
Other			(93)	(197)	(31)	(193)	59
Net cash provided by (used in) operating activities			(75)	(385)	(487)	(162)	(600)
Deposits			4,109	4,953	9,746	6,241	6,505
Policyholders' accounts balance transfer (to) from Separate Accounts			767	348	1,202	561	321
(Decrease) increase in overdrafts payable			69	48	(85)	(82)	(39)
Net cash provided by (used in) financing activities			$ 4,182	4,064	5,751	2,952	3,804
As previously reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings (loss)		1,061		2,781	544	1,464	4,420
Universal life and investment-type product policy fee income		(915)		(1,816)	(3,423)	(3,208)	(3,115)
Interest credited to policyholders’ account balances		349		626	1,555	978	1,186
Increase (decrease) in the fair value of the reinsurance contract asset		1,104		2,741	(261)	(141)	3,964
Amortization of deferred cost of reinsurance asset					159	39	302
Future policy benefits				1,314	783	934	1,647
Increase Decrease In Reinsurance Recoverable With Affiliate				92
Deferred policy acquisition costs				(84)	162	(331)	(413)
Amortization of deferred policy acquisition costs		(74)		(84)	162	(331)	(413)
Current and deferred income taxes				985	(771)	258	1,448
Accounts payable and accrued expenses				0
Other				(245)	(31)	(111)	98
Net cash provided by (used in) operating activities				(337)	(461)	(244)	(639)
Deposits					9,342	5,757	6,011
Policyholders' accounts balance transfer (to) from Separate Accounts					1,606	1,045	815
(Decrease) increase in overdrafts payable				0	(85)	0	0
Net cash provided by (used in) financing activities				4,016	5,751	3,034	3,843
Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net earnings (loss)		10		42	(38)	26	(134)
Universal life and investment-type product policy fee income		74		160	(12)	(132)	(66)
Interest credited to policyholders’ account balances		(24)		(56)	100	(72)	(109)
Increase (decrease) in the fair value of the reinsurance contract asset		0		(8)	(8)	0	(2)
Amortization of deferred cost of reinsurance asset					0	82	(24)
Future policy benefits				(11)	(65)	41	339
Increase Decrease In Reinsurance Recoverable With Affiliate				178
Deferred policy acquisition costs				10
Amortization of deferred policy acquisition costs		$ 0		10	(60)	(18)	(39)
Current and deferred income taxes				25	(79)	11	(74)
Accounts payable and accrued expenses				0
Other				48	0	(82)	(39)
Net cash provided by (used in) operating activities				(48)	(26)	82	39
Deposits					404	484	494
Policyholders' accounts balance transfer (to) from Separate Accounts					(404)	(484)	(494)
(Decrease) increase in overdrafts payable				48	0	(82)	(39)
Net cash provided by (used in) financing activities				$ 48	$ 0	$ (82)	$ (39)