Noninterest Revenue - Asset Management, Administration and Commissions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Asset management fees
Investment management fees	$ 2,128	$ 2,274
All other asset management fees	90	99
Total asset management fees	2,218	2,373
Total administration fees	478	507
Commission and other fees
Brokerage commissions	588	594
All other commissions and fees	340	333
Total commissions and fees	928	927
Total asset management, administration and commissions	$ 3,624	$ 3,807