Separate Accounts, Death Benefits and Other Insurance Benefit Features (Details 2) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items]
Net Amount at Risk by Product and Guarantee, Net Amount at Risk	$ 3,691
Net Amount at Risk by Product and Guarantee, General Account Value	25,568
Variable separate accounts	54,191	57,463
Equity securities (including mutual funds) [Member]
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items]
Variable separate accounts	49,929	52,858
Cash and cash equivalents [Member]
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items]
Variable separate accounts	$ 4,262	$ 4,605