Quarterly report pursuant to Section 13 or 15(d)

Investments (Details)

v3.5.0.2
Investments (Details) - USD ($)
$ in Millions
Sep. 30, 2016
Dec. 31, 2015
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Total trading securities $ 379 $ 322
Trading Securities    
Trading Securities Unrealized Holding Gains (Losses) 37 19
Marketable Securities 277 229
Other Assets $ 102 $ 93