Fair Value of Financial Instruments (Carrying and Estimated Fair Values of Financial Instruments) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
AFS securities:
AFS Fixed Maturity Securities	$ 85,348		$ 80,078
AFS Equity securities	234		201
Trading securities	2,134		2,282
Mortgage loans on real estate	7,466		7,210
Derivative investments	1,439		881
Other investments	1,469		1,218
Carrying Value [Member]
AFS securities:
AFS Equity securities	234		201
Trading securities	2,134		2,282
Mortgage loans on real estate	7,466		7,210
Derivative investments	1,439	[1]	881	[1]
Other investments	1,469		1,218
Cash and invested cash	1,821		2,364
GLB reserves embedded derivatives	592	[2]
Reinsurance recoverable	79
Separate account assets	122,937		117,135
Future contract benefits:
Indexed annuity contracts embedded derivatives	(1,117)		(1,048)
GLB reserves embedded derivatives			1,244
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(741)		(809)
Account values of certain investment contracts	(29,506)		(29,078)
Short-term debt	(250)		(501)
Long-term debt	(5,186)		(5,320)
Reinsurance related embedded derivatives	(141)		(108)
Variable interest entities' liabilities - derivative instruments	(17)		(27)
Other liabilities - credit default swaps	(1)		(2)
Derivative Liabilities	(65)	[1]	(187)	[1]
Other Liabilities Guaranteed Living Benefits Embedded Derivatives Reserves Fair Value Disclosure	(79)	[2]
Fair Value [Member]
AFS securities:
AFS Equity securities	234		201
Trading securities	2,134		2,282
Mortgage loans on real estate	7,792		7,386
Derivative investments	1,439	[1]	881	[1]
Other investments	1,469		1,218
Cash and invested cash	1,821		2,364
GLB reserves embedded derivatives	592	[2]
Reinsurance recoverable	79
Separate account assets	122,937		117,135
Future contract benefits:
Indexed annuity contracts embedded derivatives	(1,117)		(1,048)
GLB reserves embedded derivatives			1,244
Other contract holder funds:
Remaining guaranteed interest and similar contracts	(741)		(809)
Account values of certain investment contracts	(31,803)		(30,574)
Short-term debt	(256)		(500)
Long-term debt	(5,711)		(5,762)
Reinsurance related embedded derivatives	(141)		(108)
Variable interest entities' liabilities - derivative instruments	(17)		(27)
Other liabilities - credit default swaps	(1)		(2)
Derivative Liabilities	(65)	[1]	(187)	[1]
Other Liabilities Guaranteed Living Benefits Embedded Derivatives Reserves Fair Value Disclosure	(79)	[2]
VIEs' Fixed Maturity Securities [Member] | Carrying Value [Member]
AFS securities:
AFS Fixed Maturity Securities	598		697
VIEs' Fixed Maturity Securities [Member] | Fair Value [Member]
AFS securities:
AFS Fixed Maturity Securities	598		697
Fixed Maturity AFS Securities [Member] | Carrying Value [Member]
AFS securities:
AFS Fixed Maturity Securities	85,348		80,078
Fixed Maturity AFS Securities [Member] | Fair Value [Member]
AFS securities:
AFS Fixed Maturity Securities	$ 85,348		$ 80,078

[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 our third-party reinsurance counterparties. Refer to Note 5 for additional detail.