Goodwill and other intangible assets (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

A summary of amortizing intangible assets follows.

(Dollars in millions)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
December 31, 2024
Core deposit	$	218	$	131	$	87
Other	43		36		7
Total	$	261	$	167	$	94
December 31, 2023
Core deposit	$	218	$	90	$	128
Other	43		24		19
Total	$	261	$	114	$	147

Estimated amortization expense in future years for such intangible assets is as follows:

Summary of Estimated Amortization Expense

(Dollars in millions)
Year ending December 31:
2025	$	38
2026	27
2027	18
2028	9
2029	2
	$	94

Summary of Goodwill Assigned to Reportable Segments for Purposes of Testing for Impairment

A summary of goodwill assigned to each of the Company’s reportable segments at each of December 31, 2024 and 2023 for purposes of testing for impairment is as follows:

(Dollars in millions)
Commercial Bank	$	5,076
Retail Bank	3,089
Institutional Services and Wealth Management	300
All Other	—
Total	$	8,465