Goodwill (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Net Carrying Amount of Goodwill by Reporting Segment

Changes in the net carrying amount of goodwill, by reporting unit, for the years ended December 31, 2021 and 2020 were as follows:

($ in millions)	Commercial Banking		Branch Banking	Consumer Lending	Wealth and Asset Management	General Corporate and Other	Total
Goodwill	$	2,704	2,046	215	252	—	5,217
Accumulated impairment losses	(750)		—	(215)	—	—	(965)
Net carrying value as of December 31, 2019	$	1,954	2,046	—	252	—	4,252
Acquisition activity	26		1	—	1	—	28
Sale of business	—		—	—	(22)	—	(22)
Net carrying value as of December 31, 2020	$	1,980	2,047	—	231	—	4,258
Acquisition activity	—		256	—	—	—	256
Net carrying value as of December 31, 2021	$	1,980	2,303	—	231	—	4,514