v3.8.0.1

Equity (Net Unrealized Investment Gains and Losses on Fixed Maturity Securities on which an OTTI loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 14,621
Ending balance	17,074	$ 14,621
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	14,621	12,285	$ 16,050
Ending balance	17,074	14,621	12,285
OTTI | Net Unrealized Gains (Losses) on Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	312	234	349
Net investment gains (losses) on investments arising during the period	79	93	(3)
Reclassification adjustment for (gains) losses included in net income	(85)	1	(97)
Reclassification adjustment for OTTI losses excluded from net income	(20)	(16)	(15)
Ending balance	286	312	234
OTTI | DAC, DSI, VOBA and Reinsurance Recoverables
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(5)	6	(6)
Impact of net unrealized investment (gains) losses on DAC, DSI, VOBA and reinsurance recoverables	3	(11)	12
Ending balance	(2)	(5)	6
OTTI | Future Policy Benefits, Policyholders’ Account Balances and Reinsurance Payables
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(6)	14	3
Impact of net unrealized investment (gains) losses on future policy benefits, policyholders’ account balances and reinsurance payables	9	(20)	11
Ending balance	3	(6)	14
OTTI | Policyholders’ Dividends
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(47)	(31)	(32)
Impact of net unrealized investment (gains) losses on policyholders’ dividends	1	(16)	1
Ending balance	(46)	(47)	(31)
OTTI | Deferred Income Tax (Liability) Benefit
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(97)	(77)	(110)
Net investment gains (losses) on investments arising during the period	(22)	(31)	1
Reclassification adjustment for (gains) losses included in net income	23	0	35
Reclassification adjustment for OTTI losses excluded from net income	5	5	5
Impact of net unrealized investment (gains) losses on DAC, DSI, VOBA and reinsurance recoverables	(1)	3	(4)
Impact of net unrealized investment (gains) losses on future policy benefits, policyholders’ account balances and reinsurance payables	(2)	(3)	(4)
Impact of net unrealized investment (gains) losses on policyholders’ dividends	0	6	0
Ending balance	(94)	(97)	(77)
OTTI | Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	157	146	204
Net investment gains (losses) on investments arising during the period	57	62	(2)
Reclassification adjustment for (gains) losses included in net income	(62)	1	(62)
Reclassification adjustment for OTTI losses excluded from net income	(15)	(11)	(10)
Impact of net unrealized investment (gains) losses on DAC, DSI, VOBA and reinsurance recoverables	2	(8)	8
Impact of net unrealized investment (gains) losses on future policy benefits, policyholders’ account balances and reinsurance payables	7	(23)	7
Impact of net unrealized investment (gains) losses on policyholders’ dividends	1	(10)	1
Ending balance	$ 147	$ 157	$ 146

X

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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