Investments- Scheduled Maturities (Details 2) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Amortized cost
Due in one year or less	$ 1,054
Due after one year through five years	6,438
Due after five years through ten years	8,882
Due after ten years	4,944
Subtotal	21,318
ABS, RMBS and CMBS	2,657
Amortized cost	23,975	$ 25,822
Fair value
Due in one year or less	1,064
Due after one year through five years	6,794
Due after five years through ten years	9,108
Due after ten years	5,485
Subtotal	22,451
ABS, RMBS and CMBS	2,722
Fair value	$ 25,173	$ 28,117