Derivatives and Hedging Activities (Income Statement) (Details) (Derivatives not designated as hedging instruments, USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net	$ (87)		$ (99)		$ (101)		$ (144)
GMWB and GMAB
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net	(88)		(103)		(129)		(155)
Other Derivatives [Member]
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net	1		4		28		11
Benefits, Claims, Losses and Settlement Expenses [Member] | GMWB and GMAB | Interest rate contracts
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net	245		(380)		509		(512)
Benefits, Claims, Losses and Settlement Expenses [Member] | GMWB and GMAB | Equity derivatives
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net	(197)		12		(387)		(480)
Benefits, Claims, Losses and Settlement Expenses [Member] | GMWB and GMAB | Credit contracts
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net	(12)		8		(22)		8
Benefits, Claims, Losses and Settlement Expenses [Member] | GMWB and GMAB | Foreign exchange contracts
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net	0		2		(1)		7
Benefits, Claims, Losses and Settlement Expenses [Member] | GMWB and GMAB | GMWB and GMAB Embedded Derivatives [Member]
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net	(124)	[1]	255	[1]	(228)	[1]	822	[1]
Benefits, Claims, Losses and Settlement Expenses [Member] | Macro hedge program [Member] | Other Contract [Member]
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net	(10)				3
Net Investment Income [Member] | Interest Rate Tax Hedge [Member] | Interest Rate Tax Hedge [Member]
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net					3
Interest Credited to Fixed Accounts [Member] | Equity Indexed Annuities [Member] | Equity derivatives
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net	1				1		1
Interest Credited to Fixed Accounts [Member] | Equity Indexed Annuities Embedded Derivatives [Member] | Equity derivatives
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net	(1)				(1)		(1)
Interest Credited to Fixed Accounts [Member] | Indexed Universal Life [Member] | Equity derivatives
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net	6		2		11		6
Interest Credited to Fixed Accounts [Member] | IUL embedded derivatives | Equity derivatives
Impact of derivatives not designated as hedging instruments on the Consolidated Statements of Income
Derivative, Gain (Loss) on Derivative, Net	$ 5		$ 2		$ 11		$ 5

[1] The fair values of GMWB and GMAB embedded derivatives fluctuate based on changes in equity, interest rate and credit markets.