Variable Interest Entities ("VIE's") (Consolidated Variable Interest Entity Asset and Liability Information) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015 item		Dec. 31, 2014 item
Assets [Member]
Disclosure Of Variable Interest Entities Assets And Liabilities [Line Items]
Number of Instruments	1	[1]	1	[1]
Notional Amounts	$ 419	[1]	$ 423	[1]
Carrying Value	598	[1]	598	[1]
Assets [Member] | Total Return Swap [Member]
Disclosure Of Variable Interest Entities Assets And Liabilities [Line Items]
Number of Instruments	1		1
Notional Amounts	419		423
Liabilities [Member]
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	5	[2]	13	[2]
Liabilities [Member] | Credit Default Swaps [Member] | Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member]
Disclosure Of Variable Interest Entities Assets And Liabilities [Line Items]
Number of Instruments	2		2
Notional Amounts	600		600
Carrying Value	5		13
Liabilities [Member] | Contingent Forwards [Member] | Derivative Instruments Not Designated And Not Qualifying As Hedging Instruments [Member]
Disclosure Of Variable Interest Entities Assets And Liabilities [Line Items]
Number of Instruments	2		2
Notional Amounts
Carrying Value
Fixed Maturity Securities [Member] | Assets [Member] | Asset-backed credit card loan securities [Member]
Disclosure Of Variable Interest Entities Assets And Liabilities [Line Items]
Number of Instruments
Notional Amounts
Carrying Value	$ 598		$ 598

[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.