Investments- Scheduled Maturities (Details 2) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Amortized cost
Due in one year or less	$ 1,129
Due after one year through five years	5,566
Due after five years through ten years	9,426
Due after ten years	6,687
Subtotal	22,808
ABS, RMBS and CMBS	1,959
Amortized cost	24,767	$ 25,822
Fair value
Due in one year or less	1,145
Due after one year through five years	5,937
Due after five years through ten years	9,782
Due after ten years	7,482
Subtotal	24,346
ABS, RMBS and CMBS	2,038
Fair value	$ 26,384	$ 28,117