Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Fixed maturities, available-for-sale, at amortized cost	$ 23,985		$ 23,535
Available-for-sale Debt Securities, Amortized Cost Basis	23,764		23,260
Variable Interest Entity, Consolidated, Carrying Amount, Assets	99		157
Available-for-sale Equity Securities, Amortized Cost Basis	372		525
Available-for-sale Securities, Equity Securities	367		514
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities	12		22
Common stock, par value	$ 5,690		$ 5,690
Common stock, shares authorized	1,000		1,000
Common stock, shares issued	1,000		1,000
Common stock: shares outstanding	1,000		1,000
Collateralized Debt Obligations [Member]
Variable Interest Entity, Consolidated, Carrying Amount, Assets	0		0
Fixed Maturities [Member]
Variable Interest Entity, Consolidated, Carrying Amount, Assets	90		139
Equity Securities [Member]
Available-for-sale Equity Securities, Amortized Cost Basis	151		250
Available-for-sale Securities, Equity Securities	151		248
Commercial Loan [Member]
Fixed maturities, available-for-sale, at amortized cost	3,142	[1]	3,124	[1]
Mortgage loans loss, net of allowances	19		15
Short-term Investments [Member]
Variable Interest Entity, Consolidated, Carrying Amount, Assets	7		15
Limited Partnerships and Other Alternative Investments [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Mortgage loans loss, net of allowances	2		3
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities	1		2
Cash [Member]
Variable Interest Entity, Consolidated, Carrying Amount, Assets	$ 0		$ 0

[1] Amortized cost represents carrying value prior to valuation allowances, if any.