Variable Interest Entities ("VIE's") (Consolidated Variable Interest Entity Asset and Liability Information) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014 item		Dec. 31, 2013 item
Assets
Disclosure Of Variable Interest Entities Assets And Liabilities [Line Items]
Number of Instruments	1	[1]	1	[1]
Notional Amounts	$ 423	[1]	$ 361	[1]
Carrying Value	598	[1]	697	[1]
Assets | Fixed maturity corporate asset-backed credit card loan securities
Disclosure Of Variable Interest Entities Assets And Liabilities [Line Items]
Number of Instruments
Notional Amounts
Carrying Value	598		595
Assets | U.S. government bonds [Member]
Disclosure Of Variable Interest Entities Assets And Liabilities [Line Items]
Number of Instruments
Notional Amounts
Carrying Value			102
Assets | Total Return Swap [Member]
Disclosure Of Variable Interest Entities Assets And Liabilities [Line Items]
Number of Instruments	1		1
Notional Amounts	423		361
Liabilities
Disclosure Of Variable Interest Entities Assets And Liabilities [Line Items]
Number of Instruments	4	[2]	4	[2]
Notional Amounts	600	[2]	600	[2]
Carrying Value	13	[2]	27	[2]
Liabilities | Credit default swaps [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments
Disclosure Of Variable Interest Entities Assets And Liabilities [Line Items]
Number of Instruments	2		2
Notional Amounts	600		600
Carrying Value	13		27
Liabilities | Contingent forwards | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments
Disclosure Of Variable Interest Entities Assets And Liabilities [Line Items]
Number of Instruments	2		2
Notional Amounts
Carrying Value

[1] Reported in variable interest entities’ fixed maturity securities on our Consolidated Balance Sheets.

[2] Reported in variable interest entities’ liabilities on our Consolidated Balance Sheets.