Line of Business Information (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Summary of Line of Business Results

	Years Ended December 31,
	Investment Servicing									Investment Management									Other									Total
(Dollars in millions, except where otherwise noted)	2016			2015			2014			2016			2015			2014			2016			2015			2014			2016			2015			2014
Servicing fees	$	5,073		$	5,153		$	5,108		$	—		$	—		$	—		$	—		$	—		$	—		$	5,073		$	5,153		$	5,108
Management fees	—			—			—			1,292			1,174			1,207			—			—			—			1,292			1,174			1,207
Trading services	1,052			1,108			1,039			47			38			45			—			—			—			1,099			1,146			1,084
Securities finance	562			496			437			—			—			—			—			—			—			562			496			437
Processing fees and other	105			325			179			(15		)	(16		)	(5		)	—			—			—			90			309			174
Total fee revenue	6,792			7,082			6,763			1,324			1,196			1,247			—			—			—			8,116			8,278			8,010
Net interest revenue	2,081			2,086			2,245			3			2			15			—			—			—			2,084			2,088			2,260
Gains (losses) related to investment securities, net	7			(6		)	4			—			—			—			—			—			—			7			(6		)	4
Total revenue	8,880			9,162			9,012			1,327			1,198			1,262			—			—			—			10,207			10,360			10,274
Provision for loan losses	10			12			10			—			—			—			—			—			—			10			12			10
Total expenses	6,660			6,990			6,648			1,218			962			960			199			98			219			8,077			8,050			7,827
Income before income tax expense	$	2,210		$	2,160		$	2,354		$	109		$	236		$	302		$	(199	)	$	(98	)	$	(219	)	$	2,120		$	2,298		$	2,437
Pre-tax margin	25		%	24		%	26		%	8		%	20		%	24		%										21		%	22		%	24		%
Average assets (in billions)	$	225.3		$	246.6		$	234.2		$	4.4		$	3.9		$	3.9											$	229.7		$	250.5		$	238.1