Line of Business Information (Tables)

3 Months Ended

Mar. 31, 2021

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" columns represent costs incurred that are not allocated to a specific line of business, certain employee costs, including certain severance and restructuring costs, acquisition costs and certain provisions for legal contingencies.

	Three Months Ended March 31,
	Investment Servicing						Investment Management						Other				Total
(Dollars in millions)	2021			2020			2021			2020			2021		2020		2021			2020
Servicing fees	$	1,371		$	1,287		$	—		$	—		$	—	$	—	$	1,371		$	1,287
Management fees	—			—			493			464			—		—		493			464
Foreign exchange trading services	333			434			13			10			—		—		346			444
Securities finance	95			89			4			3			—		—		99			92
Software and processing fees(1)(2)	172			137			2			(25)			—		—		174			112
Total fee revenue(1)	1,971			1,947			512			452			—		—		2,483			2,399
Net interest income	473			663			(6)			1			—		—		467			664
Total other income	—			2			—			—			—		—		—			2
Total revenue(1)	2,444			2,612			506			453			—		—		2,950			3,065
Provision for credit losses	(9)			36			—			—			—		—		(9)			36
Total expenses(1)	1,879			1,859			397			385			56		11		2,332			2,255
Income before income tax expense	$	574		$	717		$	109		$	68		$	(56)	$	(11)	$	627		$	774
Pre-tax margin	23		%	27		%	21		%	15		%					21		%	25		%

(1) Investment Servicing includes results from our acquisition of CRD on October 1, 2018.

(2) Investment Management includes other revenue items that are primarily driven by equity market movements.