Fair Value of Financial Instruments (Carrying and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions		Jun. 30, 2015	Dec. 31, 2014
AFS securities:
AFS Fixed Maturity Securities		$ 85,422	$ 86,240
AFS Equity securities		227	231
Trading securities		1,949	2,065
Mortgage loans on real estate		8,171	7,574
Derivative investments		1,340	1,860
Other investments		1,624	1,709
Carrying Value [Member]
AFS securities:
AFS Equity securities		227	231
Trading securities		1,949	2,065
Mortgage loans on real estate		8,171	7,574
Derivative investments	[1]	1,340	1,860
Other investments		1,624	1,709
Cash and invested cash		2,327	3,919
Other assets - GLB reserves embedded derivatives	[2]	254
Other assets - reinsurance recoverable		102	154
Separate account assets		128,079	125,265
Future contract benefits:
Indexed annuity and IUL contracts embedded derivatives		(1,155)	(1,170)
Other contract holder funds:
Remaining guaranteed interest and similar contracts		(697)	(699)
Account values of certain investment contracts		(30,074)	(29,156)
Short-term debt			(250)
Long-term debt		(5,529)	(5,270)
Reinsurance related embedded derivatives		(120)	(150)
VIEs' liabilities - derivative instruments		(3)	(13)
Other liabilities - credit default swaps		(2)	(3)
Other liabilities - derivative Liabilities	[1]	(63)	(77)
Other liabilities - GLB reserves embedded derivatives	[2]	(102)	(174)
Fair Value [Member]
AFS securities:
AFS Equity securities		227	231
Trading securities		1,949	2,065
Mortgage loans on real estate		8,513	8,038
Derivative investments	[1]	1,340	1,860
Other investments		1,624	1,709
Cash and invested cash		2,327	3,919
Other assets - GLB reserves embedded derivatives	[2]	254
Other assets - reinsurance recoverable		102	154
Separate account assets		128,079	125,265
Future contract benefits:
Indexed annuity and IUL contracts embedded derivatives		(1,155)	(1,170)
Other contract holder funds:
Remaining guaranteed interest and similar contracts		(697)	(699)
Account values of certain investment contracts		(32,838)	(33,079)
Short-term debt			(253)
Long-term debt		(5,754)	(5,707)
Reinsurance related embedded derivatives		(120)	(150)
VIEs' liabilities - derivative instruments		(3)	(13)
Other liabilities - credit default swaps		(2)	(3)
Other liabilities - derivative Liabilities	[1]	(63)	(77)
Other liabilities - GLB reserves embedded derivatives	[2]	(102)	(174)
VIEs' Fixed Maturity Securities [Member] | Carrying Value [Member]
AFS securities:
AFS Fixed Maturity Securities		598	598
VIEs' Fixed Maturity Securities [Member] | Fair Value [Member]
AFS securities:
AFS Fixed Maturity Securities		598	598
Fixed Maturity AFS Securities [Member] | Carrying Value [Member]
AFS securities:
AFS Fixed Maturity Securities		85,422	86,240
Fixed Maturity AFS Securities [Member] | Fair Value [Member]
AFS securities:
AFS Fixed Maturity Securities		$ 85,422	$ 86,240

[1] We have master netting agreements with each of our derivative counterparties, which allow for the netting of our derivative asset and liability positions by counterparty.

[2] Portions of our GLB reserves embedded derivatives are ceded to third-party reinsurance counterparties. Refer to Note 5 for additional detail.