REVISION OF PRIOR PERIOD FINANCIAL STATEMENTS - Cash Flow Disclosures (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)	[1]			$ (563)	$ (2,037)
Cash flow from operating activities:
Net income (loss)		$ 265	$ (2,084)	(563)	(2,348)
Adjustments to reconcile Net income (loss) to Net cash provided by (used in) operating activities:
Interest credited to policyholders’ account balances		288	240	557	495
Policy charges and fee income		(865)	(883)	(1,724)	(1,744)
Net derivative (gains) losses			285	1,733	1,100
Amortization and depreciation					357
Cash received on the recapture of captive reinsurance				0	1,273
Changes in:
Reinsurance recoverable				(59)	181
Future policy benefits				91	(158)
Current and deferred income taxes				99	(478)
Other, net				26	216
Net cash provided by (used in) operating activities				(283)	869
Proceeds from the sale/maturity/prepayment of:
Trading account securities				7,117	4,867
Short-term investments	[2]			1,518	1,307
Payment for the purchase/origination of:
Short-term investments	[2]			(1,594)	(876)
Cash settlements related to derivative instruments				(1,089)	(756)
Other, net				(11)	390
Net cash provided by (used in) investing activities				(2,776)	(1,876)
Policyholders’ account balances:
Deposits				4,609	4,120
Withdrawals				(2,291)	(2,131)
Transfers (to) from Separate Accounts				876	914
Net Cash Provided by (Used in) Financing Activities				3,530	2,578
Net (income) loss attributable to the noncontrolling interest		$ 1	0	$ 3	(1)
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)					(2,091)
Cash flow from operating activities:
Net income (loss)			(1,958)		(2,091)
Adjustments to reconcile Net income (loss) to Net cash provided by (used in) operating activities:
Policy charges and fee income			(904)		(1,773)
Net derivative (gains) losses			312		1,172
Amortization and depreciation					0
Cash received on the recapture of captive reinsurance					1,099
Changes in:
Reinsurance recoverable					15
Future policy benefits					396
Current and deferred income taxes					(645)
Other, net					416
Net cash provided by (used in) operating activities					1,190
Proceeds from the sale/maturity/prepayment of:
Trading account securities					4,843
Short-term investments					0
Payment for the purchase/origination of:
Short-term investments					0
Cash settlements related to derivative instruments					(267)
Other, net					379
Net cash provided by (used in) investing activities					(1,605)
Policyholders’ account balances:
Deposits					5,227
Withdrawals					(2,611)
Transfers (to) from Separate Accounts					(305)
Net Cash Provided by (Used in) Financing Activities					1,986
Presentation Reclassifications
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)					0
Adjustments to reconcile Net income (loss) to Net cash provided by (used in) operating activities:
Policy charges and fee income					0
Net derivative (gains) losses					0
Amortization and depreciation					336
Cash received on the recapture of captive reinsurance					0
Changes in:
Reinsurance recoverable					0
Future policy benefits					0
Current and deferred income taxes					0
Other, net					104
Net cash provided by (used in) operating activities					(2)
Proceeds from the sale/maturity/prepayment of:
Trading account securities					0
Short-term investments					1,331
Payment for the purchase/origination of:
Short-term investments					(1,081)
Cash settlements related to derivative instruments					0
Other, net					0
Net cash provided by (used in) investing activities					2
Policyholders’ account balances:
Deposits					0
Withdrawals					0
Transfers (to) from Separate Accounts					0
Net Cash Provided by (Used in) Financing Activities					0
Impact of Revisions
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)					54
Adjustments to reconcile Net income (loss) to Net cash provided by (used in) operating activities:
Policy charges and fee income					29
Net derivative (gains) losses					(72)
Amortization and depreciation					21
Cash received on the recapture of captive reinsurance					174
Changes in:
Reinsurance recoverable					166
Future policy benefits					(554)
Current and deferred income taxes					167
Other, net					(304)
Net cash provided by (used in) operating activities					(319)
Proceeds from the sale/maturity/prepayment of:
Trading account securities					24
Short-term investments					(24)
Payment for the purchase/origination of:
Short-term investments					205
Cash settlements related to derivative instruments					(489)
Other, net					11
Net cash provided by (used in) investing activities					(273)
Policyholders’ account balances:
Deposits					(1,107)
Withdrawals					480
Transfers (to) from Separate Accounts					1,219
Net Cash Provided by (Used in) Financing Activities					592
As Revised
Cash flow from operating activities:
Net income (loss)			(2,084)		(2,348)
Discontinued Operations | Alliance Bernstein
Adjustments to reconcile Net income (loss) to Net cash provided by (used in) operating activities:
Net derivative (gains) losses			0		(2)
Policyholders’ account balances:
Net (income) loss attributable to the noncontrolling interest			$ 156		$ 311

[1] Net income (loss) includes $311 million in the six months ended June 30, 2018 of the discontinued operations that are not included in Net income (loss) in the Consolidated Statements of Income (Loss).

[2] Prior period amounts have been reclassified to conform to the current period’s presentation. See Note 15 for further information.