Derivatives and Hedging Activities (Details 3) (USD $)	Mar. 31, 2014		Dec. 31, 2013
Summary of Option Premiums Payable and Receivable
Premiums Payable For Derivatives Option Contracts	$ 2,044,000,000
Premiums Receivable For Derivatives Option Contracts	385,000,000
Gross notional amount of forwards, futures, total return swaps and commodity swaps	79,000,000		111,000,000
Gross notional amount of foreign currency forward contracts	106,000,000		30,000,000
2014
Summary of Option Premiums Payable and Receivable
Premiums Payable For Derivatives Option Contracts	307,000,000	[1]
Premiums Receivable For Derivatives Option Contracts	78,000,000	[1]
2015
Summary of Option Premiums Payable and Receivable
Premiums Payable For Derivatives Option Contracts	360,000,000
Premiums Receivable For Derivatives Option Contracts	68,000,000
2016
Summary of Option Premiums Payable and Receivable
Premiums Payable For Derivatives Option Contracts	317,000,000
Premiums Receivable For Derivatives Option Contracts	52,000,000
2017
Summary of Option Premiums Payable and Receivable
Premiums Payable For Derivatives Option Contracts	247,000,000
Premiums Receivable For Derivatives Option Contracts	47,000,000
2018
Summary of Option Premiums Payable and Receivable
Premiums Payable For Derivatives Option Contracts	205,000,000
Premiums Receivable For Derivatives Option Contracts	57,000,000
2019-2027
Summary of Option Premiums Payable and Receivable
Premiums Payable For Derivatives Option Contracts	608,000,000
Premiums Receivable For Derivatives Option Contracts	83,000,000
Freestanding non-VA derivatives [Member]
Summary of Option Premiums Payable and Receivable
Notional Amount of Index Options and Futures Contracts	1,600,000,000		1,500,000,000
Deferred Compensation Plan [Member]
Summary of Option Premiums Payable and Receivable
Gross notional amount of futures contracts	218,000,000		224,000,000
Macro hedge program [Member]
Summary of Option Premiums Payable and Receivable
Derivative, Notional Amount	710,000,000		710,000,000
GMWB and GMAB Embedded Derivatives [Member]
Summary of Option Premiums Payable and Receivable
Derivative, Notional Amount	$ 141,500,000,000		$ 144,500,000,000

[1] 2014 amounts represent the amounts payable and receivable for the period from April 1, 2014 to December 31, 2014.