Reserve for Life-Contingent Contract Benefits and Contractholder Funds (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Contractholder funds activity
Balance at beginning of period	$ 39,319	$ 42,332	$ 48,195
Deposits	2,440	2,275	2,318
Interest credited	1,295	1,323	1,629
Benefits	(1,535)	(1,463)	(1,461)
Surrenders and partial withdrawals	(3,299)	(3,990)	(4,935)
Bank withdrawals			(1,463)
Maturities of and interest payments on institutional products	(1,799)	(138)	(867)
Contract charges	(1,112)	(1,066)	(1,028)
Net transfers from separate accounts	12	11	12
Fair value hedge adjustments for institutional products			(34)
Other adjustments	(72)	35	(34)
Classified as held for sale	(10,945)
Balance at end of period	$ 24,304	$ 39,319	$ 42,332