Investments (Details 2) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Amortized cost
Due in one year or less	$ 3,440
Due after one year through five years	25,684
Due after five years through ten years	15,629
Due after ten years	8,354
Subtotal	53,107
ABS, RMBS and CMBS	6,509
Total amortized cost for fixed income securities	59,616	59,008
Fair value
Due in one year or less	3,482
Due after one year through five years	26,410
Due after five years through ten years	16,319
Due after ten years	9,423
Subtotal	55,634
ABS, RMBS and CMBS	6,679
Total fixed income securities	$ 62,313	$ 60,910