Revenue from contracts with customers (Tables)

12 Months Ended

Dec. 31, 2024

Revenue from Contract with Customer [Abstract]

Summary of Sources of Noninterest Income that are Subject to Revenue Recognition Accounting Guidance

The following tables summarize sources of the Company’s noninterest income during 2024, 2023 and 2022 that are subject to the revenue recognition guidance.

(Dollars in millions)	Commercial Bank		Retail Bank		Institutional Services and Wealth Management		Total
Year Ended December 31, 2024
Classification in Consolidated Statement of Income
Service charges on deposit accounts	$	160	$	353	$	1	$	514
Trust income	3		—		672		675
Brokerage services income	6		—		115		121
Other revenues from operations:
Merchant discount and credit card interchange fees	74		88		—		162
Other	29		30		10		69
	$	272	$	471	$	798	$	1,541
Year Ended December 31, 2023
Classification in Consolidated Statement of Income
Service charges on deposit accounts	$	144	$	330	$	1	$	475
Trust income	2		—		678		680
Brokerage services income	6		—		96		102
Other revenues from operations:
Merchant discount and credit card interchange fees	77		84		—		161
Other	28		30		8		66
	$	257	$	444	$	783	$	1,484
Year Ended December 31, 2022
Classification in Consolidated Statement of Income
Service charges on deposit accounts	$	130	$	317	$	—	$	447
Trust income	—		—		741		741
Brokerage services income	5		—		83		88
Other revenues from operations:
Merchant discount and credit card interchange fees	73		86		—		159
Other	24		28		38		90
	$	232	$	431	$	862	$	1,525