Derivatives (Net Derivative Gains Losses) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Components of Net Derivatives Gains (Losses)
Derivatives and hedging gains (losses)	$ (8,343)	$ (3,158)	$ 6,108
Embedded derivatives	5,104	1,239	(1,284)
Total net derivative gains (losses)	$ (3,239)	$ (1,919)	$ 4,824