Line of Business Information (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Summary of Line of Business Results

	Years Ended December 31,
	Investment Servicing									Investment Management									Other									Total
	2015			2014			2013			2015			2014			2013			2015			2014			2013			2015			2014			2013
(Dollars in millions, except where otherwise noted)
Servicing fees	$	5,153		$	5,108		$	4,799		$	—		$	—		$	—		$	—		$	—		$	—		$	5,153		$	5,108		$	4,799
Management fees	—			—			—			1,174			1,207			1,106			—			—			—			1,174			1,207			1,106
Trading services	1,108			1,039			1,027			38			45			67			—			—			—			1,146			1,084			1,094
Securities finance	496			437			359			—			—			—			—			—			—			496			437			359
Processing fees and other	325			179			206			(16		)	(5		)	6			—			—			—			309			174			212
Total fee revenue	7,082			6,763			6,391			1,196			1,247			1,179			—			—			—			8,278			8,010			7,570
Net interest revenue	2,086			2,245			2,278			2			15			25			—			—			—			2,088			2,260			2,303
Gains (losses) related to investment securities, net	(6		)	4			(9		)	—			—			—			—			—			—			(6		)	4			(9		)
Total revenue	9,162			9,012			8,660			1,198			1,262			1,204			—			—			—			10,360			10,274			9,864
Provision for loan losses	12			10			6			—			—			—			—			—			—			12			10			6
Total expenses	6,990			6,648			6,190			962			960			822			98			219			180			8,050			7,827			7,192
Income before income tax expense	$	2,160		$	2,354		$	2,464		$	236		$	302		$	382		$	(98	)	$	(219	)	$	(180	)	$	2,298		$	2,437		$	2,666
Pre-tax margin	24		%	26		%	28		%	20		%	24		%	32		%										22		%	24		%	27		%
Average assets (in billions)	$	246.6		$	234.2		$	203.2		$	3.9		$	3.9		$	3.8											$	250.5		$	238.1		$	207.0