Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions		Dec. 31, 2015	Dec. 31, 2014
Condensed Balance Sheet Statements, Captions [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis		$ 23,559	$ 23,260
Variable Interest Entity, Consolidated, Carrying Amount, Assets		54	157
Available-for-sale Equity Securities, Amortized Cost Basis		471	525
Available-for-sale Securities, Equity Securities		459	514
Cash	[1]	$ 12	$ 22
Other liabilities (including variable interest entity liabilities of $12 and $22)		1,000	1,000
Common stock: shares authorized		1,000	1,000
Common stock: shares issued		1,000	1,000
Common stock: shares outstanding		$ 5,690	$ 5,690
Variable Interest Entity, Primary Beneficiary [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Available-for-sale Equity Securities, Amortized Cost Basis		$ 1	$ 0
Equity Securities [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Available-for-sale Equity Securities, Amortized Cost Basis	[2]		275
Fixed Maturities [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets		49	139
Equity Securities [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Available-for-sale Equity Securities, Amortized Cost Basis		293	250
Available-for-sale Securities, Equity Securities		281	248
Limited Partnerships and Other Alternative Investments [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets		2	3
Cash	[1]	1	2
Short-term Investments [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets		2	15
Commercial Loan [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Allowance for Loan and Lease Losses, Real Estate		19	15
Cash [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets		$ 0	$ 0

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

[2] [3]Excludes equity securities, FVO, with a cost and fair value of $293 and $281, respectively, as of December 31, 2015, and $250 and $248 as of December 31, 2014.