Line of Business Information (Tables)

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Summary of Line of Business Results

The following is a summary of our line-of-business results for the periods indicated. The "Other" column represents costs incurred that are not allocated to a specific line of business, including certain severance and restructuring costs, acquisition costs and certain provisions for legal contingencies.

	Three Months Ended June 30,
	Investment Servicing						Investment Management						Other						Total
(Dollars in millions)	2018			2017			2018			2017			2018			2017			2018			2017
Servicing fees	$	1,381		$	1,339		$	—		$	—		$	—		$	—		$	1,381		$	1,339
Management fees	—			—			465			397			—			—			465			397
Trading services	282			272			33			17			—			—			315			289
Securities finance	154			179			—			—			—			—			154			179
Processing fees and other	41			32			2			(1		)	—			—			43			31
Total fee revenue	1,858			1,822			500			413			—			—			2,358			2,235
Net interest income	663			576			(4		)	(1		)	—			—			659			575
Gains (losses) related to investment securities, net	9			—			—			—			—			—			9			—
Total revenue	2,530			2,398			496			412			—			—			3,026			2,810
Provision for loan losses	2			3			—			—			—			—			2			3
Total expenses	1,693			1,649			389			311			77			71			2,159			2,031
Income before income tax expense	$	835		$	746		$	107		$	101		$	(77	)	$	(71	)	$	865		$	776
Pre-tax margin	33		%	31		%	22		%	25		%							29		%	28		%
	Six Months Ended June 30,
	Investment Servicing						Investment Management						Other						Total
(Dollars in millions)	2018			2017			2018			2017			2018			2017			2018			2017
Servicing fees	$	2,802		$	2,635		$	—		$	—		$	—		$	—		$	2,802		$	2,635
Management fees	—			—			937			779			—			—			937			779
Trading services	555			529			64			35			—			—			619			564
Securities finance	295			312			—			—			—			—			295			312
Processing fees and other	82			138			1			5			—			—			83			143
Total fee revenue	3,734			3,614			1,002			819			—			—			4,736			4,433
Net interest income	1,311			1,085			(9		)	—			—			—			1,302			1,085
Gains (losses) related to investment securities, net	7			(40		)	—			—			—			—			7			(40		)
Total revenue	5,052			4,659			993			819			—			—			6,045			5,478
Provision for loan losses	2			1			—			—			—			—			2			1
Total expenses	3,551			3,377			787			640			77			100			4,415			4,117
Income before income tax expense	$	1,499		$	1,281		$	206		$	179		$	(77	)	$	(100	)	$	1,628		$	1,360
Pre-tax margin	30		%	27		%	21		%	22		%							27		%	25		%