Business Segments - Results of Operations and Average Assets by Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Segment Reporting Information
Interest Income (Expense), Operating, Including FTE Adjustments	$ 1,939	$ 1,442
Provision for (benefit from) credit losses	227	174
Net interest income after provision for (benefit from) credit losses	1,712	1,268
Noninterest Income
Wealth and asset management revenue	233	172
Commercial payments revenue	218	153
Consumer banking revenue	146	137
Capital markets fees	134	90
Commercial banking revenue	105	80
Mortgage banking net revenue	44	57
Other noninterest income	27	14
Securities losses, net	(12)	(9)
Total noninterest income	895	694
Noninterest Expense
Compensation and benefits	1,410	750
Technology and communications	204	123
Net occupancy expense	140	87
Equipment expense	55	42
Loan and lease expense	42	30
Marketing expense	50	28
Card and processing expense	79	21
Other noninterest expense	415	223
Total noninterest expense	2,395	1,304
Income (loss) before income taxes (FTE)	212	658
Average assets	265,551	210,558
Operating Segments \| Commercial Banking
Segment Reporting Information
Interest Income (Expense), Operating, Including FTE Adjustments	878	552
Provision for (benefit from) credit losses	158	80
Net interest income after provision for (benefit from) credit losses	720	472
Noninterest Income
Wealth and asset management revenue	1	0
Commercial payments revenue	191	133
Consumer banking revenue	0	0
Capital markets fees	135	90
Commercial banking revenue	103	79
Mortgage banking net revenue	0	0
Other noninterest income	11	6
Securities losses, net	0	(7)
Total noninterest income	441	301
Noninterest Expense
Compensation and benefits	247	178
Technology and communications	6	3
Net occupancy expense	12	9
Equipment expense	8	8
Loan and lease expense	13	7
Marketing expense	1	1
Card and processing expense	29	3
Other noninterest expense	418	302
Total noninterest expense	734	511
Income (loss) before income taxes (FTE)	427	262
Average assets	108,037	77,940
FTE adjustments	3	3
Operating Segments \| Consumer and Small Business Banking
Segment Reporting Information
Interest Income (Expense), Operating, Including FTE Adjustments	1,073	975
Provision for (benefit from) credit losses	89	84
Net interest income after provision for (benefit from) credit losses	984	891
Noninterest Income
Wealth and asset management revenue	75	66
Commercial payments revenue	30	20
Consumer banking revenue	146	135
Capital markets fees	1	0
Commercial banking revenue	1	1
Mortgage banking net revenue	44	57
Other noninterest income	1	2
Securities losses, net	0	0
Total noninterest income	298	281
Noninterest Expense
Compensation and benefits	291	236
Technology and communications	11	7
Net occupancy expense	77	54
Equipment expense	19	16
Loan and lease expense	22	18
Marketing expense	33	19
Card and processing expense	19	17
Other noninterest expense	338	283
Total noninterest expense	810	650
Income (loss) before income taxes (FTE)	472	522
Average assets	60,154	54,406
Operating Segments \| Wealth and Asset Management
Segment Reporting Information
Interest Income (Expense), Operating, Including FTE Adjustments	83	49
Provision for (benefit from) credit losses	0	0
Net interest income after provision for (benefit from) credit losses	83	49
Noninterest Income
Wealth and asset management revenue	161	106
Commercial payments revenue	2	0
Consumer banking revenue	0	1
Capital markets fees	0	1
Commercial banking revenue	1	0
Mortgage banking net revenue	0	0
Other noninterest income	0	1
Securities losses, net	0	0
Total noninterest income	164	109
Noninterest Expense
Compensation and benefits	88	62
Technology and communications	3	0
Net occupancy expense	5	3
Equipment expense	0	0
Loan and lease expense	1	0
Marketing expense	0	0
Card and processing expense	0	1
Other noninterest expense	86	40
Total noninterest expense	183	106
Income (loss) before income taxes (FTE)	64	52
Average assets	8,374	4,657
General Corporate and Other
Segment Reporting Information
Interest Income (Expense), Operating, Including FTE Adjustments	(95)	(134)
Provision for (benefit from) credit losses	(20)	10
Net interest income after provision for (benefit from) credit losses	(75)	(144)
Noninterest Income
Wealth and asset management revenue	(4)	0
Commercial payments revenue	(5)	0
Consumer banking revenue	0	1
Capital markets fees	(2)	(1)
Commercial banking revenue	0	0
Mortgage banking net revenue	0	0
Other noninterest income	15	5
Securities losses, net	(12)	(2)
Total noninterest income	(8)	3
Noninterest Expense
Compensation and benefits	784	274
Technology and communications	184	113
Net occupancy expense	46	21
Equipment expense	28	18
Loan and lease expense	6	5
Marketing expense	16	8
Card and processing expense	31	0
Other noninterest expense	(427)	(402)
Total noninterest expense	668	37
Income (loss) before income taxes (FTE)	(751)	(178)
Average assets	88,986	73,555
FTE adjustments	2	$ 2
General Corporate and Other \| Property and equipment
Noninterest Expense
Impairment charges	$ 23

FIFTH THIRD BANCORP 10-Q