Investments and Derivative Instruments Level 4 Variable Interest Entities (Details) - USD ($) $ in Millions		Dec. 31, 2015	Dec. 31, 2014
Consolidated Variable Interest Entities [Abstract]
Variable Interest Entity, Consolidated, Carrying Amount, Assets		$ 54	$ 157
Cash	[1]	12	22
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	[2]	43	139
Variable Interest Entity, Primary Beneficiary [Member] | Fixed Income Funds [Member]
Consolidated Variable Interest Entities [Abstract]
Variable Interest Entity, Consolidated, Carrying Amount, Assets	[3]	52	154
Cash	[1]	11	20
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	[2]	42	138
Variable Interest Entity, Primary Beneficiary [Member] | Limited Partnerships and Other Alternative Investments [Member]
Consolidated Variable Interest Entities [Abstract]
Variable Interest Entity, Consolidated, Carrying Amount, Assets		2	3
Cash	[1]	1	2
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	[2]	$ 1	$ 1

[1] Included in other liabilities in the Company’s Consolidated Balance Sheets.

[2] The maximum exposure to loss represents the maximum loss amount that the Company could recognize as a reduction in net investment income or as a realized capital loss and is the cost basis of the Company’s investment.

[3] [3]Total assets included in fixed maturities, FVO, short-term investments, and equity, AFS in the Company's Consolidated Balance Sheets.