Quarterly report pursuant to Section 13 or 15(d)

Investments, Trading Assets (Detail)

v3.8.0.1
Investments, Trading Assets (Detail) - Debt Securities [Member] - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Sep. 30, 2017
Oct. 01, 2016
Schedule Of Trading Securities And Other Trading Assets [Line Items]        
Trading Securities, Change in Unrealized Holding Gain (Loss) $ 81 $ 72 $ 433 $ 245
Unrealized Gain (Loss) on Derivatives $ (75) $ (54) $ (402) $ (224)