Credit Quality and the Allowance for Loan and Lease Losses - Summary of the Credit Risk Profile of the Bancorp's Commercial Portfolio Segment by Class (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Modifications
Total	$ 119,791	$ 117,234
Commercial
Financing Receivable, Modifications
Year One	6,248	5,105
Year Two	3,436	6,197
Year Three	4,665	3,499
Year Four	2,583	1,650
Year Five	1,135	1,099
Prior	1,771	1,730
Revolving and Other Loans	53,455	53,466
Total	73,293	72,746
Commercial | Pass
Financing Receivable, Modifications
Year One	5,998	4,649
Year Two	3,243	5,759
Year Three	4,339	3,328
Year Four	2,461	1,579
Year Five	1,086	990
Prior	1,669	1,494
Revolving and Other Loans	49,277	49,710
Total	68,073	67,509
Commercial | Special mention
Financing Receivable, Modifications
Year One	81	158
Year Two	26	298
Year Three	97	90
Year Four	16	38
Year Five	5	20
Prior	16	121
Revolving and Other Loans	1,992	2,056
Total	2,233	2,781
Commercial | Substandard
Financing Receivable, Modifications
Year One	169	298
Year Two	167	140
Year Three	227	81
Year Four	106	33
Year Five	44	89
Prior	86	115
Revolving and Other Loans	2,116	1,694
Total	2,915	2,450
Commercial | Doubtful
Financing Receivable, Modifications
Year One	0	0
Year Two	0	0
Year Three	2	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving and Other Loans	70	6
Total	72	6
Commercial | Commercial and industrial loans
Financing Receivable, Modifications
Year One	3,048	2,245
Year Two	1,454	3,637
Year Three	2,651	1,902
Year Four	1,396	631
Year Five	406	308
Prior	461	499
Revolving and Other Loans	42,855	44,048
Total	52,271	53,270
Commercial | Commercial and industrial loans | Pass
Financing Receivable, Modifications
Year One	2,966	2,124
Year Two	1,346	3,434
Year Three	2,445	1,814
Year Four	1,321	580
Year Five	371	263
Prior	437	321
Revolving and Other Loans	40,185	40,889
Total	49,071	49,425
Commercial | Commercial and industrial loans | Special mention
Financing Receivable, Modifications
Year One	15	16
Year Two	13	100
Year Three	22	60
Year Four	1	33
Year Five	3	6
Prior	9	105
Revolving and Other Loans	1,055	1,756
Total	1,118	2,076
Commercial | Commercial and industrial loans | Substandard
Financing Receivable, Modifications
Year One	67	105
Year Two	95	103
Year Three	182	28
Year Four	74	18
Year Five	32	39
Prior	15	73
Revolving and Other Loans	1,545	1,397
Total	2,010	1,763
Commercial | Commercial and industrial loans | Doubtful
Financing Receivable, Modifications
Year One	0	0
Year Two	0	0
Year Three	2	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving and Other Loans	70	6
Total	72	6
Commercial | Commercial mortgage owner-occupied loans:
Financing Receivable, Modifications
Year One	858	931
Year Two	833	1,123
Year Three	891	775
Year Four	665	418
Year Five	324	270
Prior	353	270
Revolving and Other Loans	2,099	1,413
Total	6,023	5,200
Commercial | Commercial mortgage owner-occupied loans: | Pass
Financing Receivable, Modifications
Year One	786	870
Year Two	790	1,078
Year Three	844	746
Year Four	630	408
Year Five	315	219
Prior	307	260
Revolving and Other Loans	1,829	1,279
Total	5,501	4,860
Commercial | Commercial mortgage owner-occupied loans: | Special mention
Financing Receivable, Modifications
Year One	8	30
Year Two	9	23
Year Three	23	18
Year Four	7	0
Year Five	0	6
Prior	3	0
Revolving and Other Loans	31	20
Total	81	97
Commercial | Commercial mortgage owner-occupied loans: | Substandard
Financing Receivable, Modifications
Year One	64	31
Year Two	34	22
Year Three	24	11
Year Four	28	10
Year Five	9	45
Prior	43	10
Revolving and Other Loans	239	114
Total	441	243
Commercial | Commercial mortgage owner-occupied loans: | Doubtful
Financing Receivable, Modifications
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving and Other Loans	0	0
Total	0	0
Commercial | Commercial mortgage nonowner-occupied loans:
Financing Receivable, Modifications
Year One	802	1,078
Year Two	778	992
Year Three	828	269
Year Four	175	350
Year Five	263	293
Prior	410	247
Revolving and Other Loans	2,967	2,847
Total	6,223	6,076
Commercial | Commercial mortgage nonowner-occupied loans: | Pass
Financing Receivable, Modifications
Year One	710	886
Year Two	751	825
Year Three	769	261
Year Four	170	348
Year Five	263	293
Prior	408	243
Revolving and Other Loans	2,698	2,724
Total	5,769	5,580
Commercial | Commercial mortgage nonowner-occupied loans: | Special mention
Financing Receivable, Modifications
Year One	54	111
Year Two	0	166
Year Three	50	0
Year Four	5	2
Year Five	0	0
Prior	0	2
Revolving and Other Loans	150	81
Total	259	362
Commercial | Commercial mortgage nonowner-occupied loans: | Substandard
Financing Receivable, Modifications
Year One	38	81
Year Two	27	1
Year Three	9	8
Year Four	0	0
Year Five	0	0
Prior	2	2
Revolving and Other Loans	119	42
Total	195	134
Commercial | Commercial mortgage nonowner-occupied loans: | Doubtful
Financing Receivable, Modifications
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving and Other Loans	0	0
Total	0	0
Commercial | Commercial construction loans
Financing Receivable, Modifications
Year One	4	232
Year Two	21	36
Year Three	0	78
Year Four	29	41
Year Five	0	70
Prior	0	6
Revolving and Other Loans	5,534	5,158
Total	5,588	5,621
Commercial | Commercial construction loans | Pass
Financing Receivable, Modifications
Year One	4	171
Year Two	21	36
Year Three	0	45
Year Four	29	41
Year Five	0	70
Prior	0	6
Revolving and Other Loans	4,565	4,818
Total	4,619	5,187
Commercial | Commercial construction loans | Special mention
Financing Receivable, Modifications
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving and Other Loans	756	199
Total	756	199
Commercial | Commercial construction loans | Substandard
Financing Receivable, Modifications
Year One	0	61
Year Two	0	0
Year Three	0	33
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving and Other Loans	213	141
Total	213	235
Commercial | Commercial construction loans | Doubtful
Financing Receivable, Modifications
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving and Other Loans	0	0
Total	0	0
Commercial | Commercial leases
Financing Receivable, Modifications
Year One	1,536	619
Year Two	350	409
Year Three	295	475
Year Four	318	210
Year Five	142	158
Prior	547	708
Revolving and Other Loans	0	0
Total	3,188	2,579
Commercial | Commercial leases | Pass
Financing Receivable, Modifications
Year One	1,532	598
Year Two	335	386
Year Three	281	462
Year Four	311	202
Year Five	137	145
Prior	517	664
Revolving and Other Loans	0	0
Total	3,113	2,457
Commercial | Commercial leases | Special mention
Financing Receivable, Modifications
Year One	4	1
Year Two	4	9
Year Three	2	12
Year Four	3	3
Year Five	2	8
Prior	4	14
Revolving and Other Loans	0	0
Total	19	47
Commercial | Commercial leases | Substandard
Financing Receivable, Modifications
Year One	0	20
Year Two	11	14
Year Three	12	1
Year Four	4	5
Year Five	3	5
Prior	26	30
Revolving and Other Loans	0	0
Total	56	75
Commercial | Commercial leases | Doubtful
Financing Receivable, Modifications
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Revolving and Other Loans	0	0
Total	$ 0	$ 0