Revenue from contracts with customers (Tables)

12 Months Ended

Dec. 31, 2023

ASU 2014-09 [Member]

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

The following tables summarize sources of the Company’s noninterest income during 2023, 2022 and 2021 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, 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
Year Ended December 31, 2021
Classification in Consolidated      Statement of Income
Service charges on deposit accounts	$	115	$	287	$	—	$	402
Trust income		—		—		645		645
Brokerage services income		2		—		61		63
Other revenues from operations:
Merchant discount and    credit card interchange fees		58		73		—		131
Other		13		30		40		83
	$	188	$	390	$	746	$	1,324