Fair Values of Assets and Liabilities (Level 3 rollforwards-Liabilities) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Changes in unrealized gains (losses) relating to assets and liabilities held at the end of the period included in:
Cumulative embedded derivative liability	$ (6)		$ (28)		$ 9		$ (90)
IUL embedded derivatives
Future Policy Benefits:
Balance at the beginning of the period	154		61		125		45
Net income	8	[1]	2	[1]	14	[1]	6	[1]
Issues	24		13		48		25
Settlements	(2)				(3)
Balance at the end of the period	184		76		184		76
Changes in unrealized gains (losses) relating to assets and liabilities held at the end of the period included in:
Interest credited to fixed accounts	8		2		14		6
GMWB and GMAB Embedded Derivatives [Member]
Future Policy Benefits:
Balance at the beginning of the period	(471)		266		(575)		833
Net income	68	[2]	(306)	[2]	120	[2]	(924)	[2]
Issues	60		53		119		103
Settlements	(4)		(2)		(11)		(1)
Balance at the end of the period	(347)		11		(347)		11
Changes in unrealized gains (losses) relating to assets and liabilities held at the end of the period included in:
Benefits, claims, losses and settlement expenses	67		(299)		119		(908)
Policyholder Account Balances, Future Policy Benefits and Claims [Member]
Future Policy Benefits:
Balance at the beginning of the period	(317)		327		(450)		878
Net income	76		(304)		134		(918)
Issues	84		66		167		128
Settlements	(6)		(2)		(14)		(1)
Balance at the end of the period	(163)		87		(163)		87
Changes in unrealized gains (losses) relating to assets and liabilities held at the end of the period included in:
Benefits, claims, losses and settlement expenses	67		(299)		119		(908)
Interest credited to fixed accounts	$ 8		$ 2		$ 14		$ 6

[1] Included in interest credited to fixed accounts in the Consolidated Statements of Income.

[2] Included in benefits, claims, losses and settlement expenses in the Consolidated Statements of Income.