Line of Business Information (Tables)

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Summary of Line of Business Results

The following tables summarize our line of business results for the periods indicated. The "Other" columns represent amounts that are not allocated to our two lines of business, including repositioning charges, employee costs, acquisition costs, revenue-related recoveries and certain legal accruals.

	Three Months Ended March 31,
	Investment Servicing						Investment Management						Other				Total
(Dollars in millions)	2024			2023			2024			2023			2024		2023		2024			2023
Servicing fees	$	1,228		$	1,217		$	—		$	—		$	—	$	—	$	1,228		$	1,217
Management fees	—			—			510			457			—		—		510			457
Foreign exchange trading services	308			321			23			21			—		—		331			342
Securities finance	90			103			6			6			—		—		96			109
Software and processing fees	207			165			—			—			—		—		207			165
Other fee revenue	43			28			7			17			—		—		50			45
Total fee revenue	1,876			1,834			546			501			—		—		2,422			2,335
Net interest income	711			762			5			4			—		—		716			766
Total revenue	2,587			2,596			551			505			—		—		3,138			3,101
Provision for credit losses	27			44			—			—			—		—		27			44
Total expenses	1,963			1,978			420			386			130		5		2,513			2,369
Income before income tax expense	$	597		$	574		$	131		$	119		$	(130)	$	(5)	$	598		$	688
Pre-tax margin	23		%	22		%	24		%	24		%					19		%	22		%