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, 2021	Dec. 31, 2020
Financing Receivable, Modifications
Total	[1],[2]	$ 112,050	$ 108,782
Commercial
Financing Receivable, Modifications
Year One		7,407	10,665
Year Two		4,612	4,149
Year Three		2,684	2,839
Year Four		1,554	1,767
Year Five		1,021	1,369
Prior		2,379	2,523
Revolving Loans		50,611	45,685
Revolving Loans Converted to Term Loans		0	0
Total		70,268	68,997
Commercial | Pass
Financing Receivable, Modifications
Year One		7,052	9,711
Year Two		4,333	3,901
Year Three		2,559	2,420
Year Four		1,400	1,604
Year Five		913	1,266
Prior		2,170	2,300
Revolving Loans		47,092	39,029
Revolving Loans Converted to Term Loans		0	0
Total		65,519	60,231
Commercial | Special mention
Financing Receivable, Modifications
Year One		130	448
Year Two		108	142
Year Three		74	205
Year Four		60	61
Year Five		31	43
Prior		62	47
Revolving Loans		1,089	3,388
Revolving Loans Converted to Term Loans		0	0
Total		1,554	4,334
Commercial | Substandard
Financing Receivable, Modifications
Year One		225	494
Year Two		171	104
Year Three		51	205
Year Four		94	102
Year Five		77	60
Prior		147	176
Revolving Loans		2,430	3,261
Revolving Loans Converted to Term Loans		0	0
Total		3,195	4,402
Commercial | Doubtful
Financing Receivable, Modifications
Year One		0	12
Year Two		0	2
Year Three		0	9
Year Four		0	0
Year Five		0	0
Prior		0	0
Revolving Loans		0	7
Revolving Loans Converted to Term Loans		0	0
Total		0	30
Commercial | Commercial and industrial loans
Financing Receivable, Modifications
Year One		4,322	7,227
Year Two		2,365	2,272
Year Three		1,246	1,397
Year Four		650	806
Year Five		430	515
Prior		872	828
Revolving Loans		41,774	36,620
Revolving Loans Converted to Term Loans		0	0
Total		51,659	49,665
Commercial | Commercial and industrial loans | Pass
Financing Receivable, Modifications
Year One		4,266	7,042
Year Two		2,291	2,144
Year Three		1,198	1,114
Year Four		552	700
Year Five		356	471
Prior		752	703
Revolving Loans		39,486	31,657
Revolving Loans Converted to Term Loans		0	0
Total		48,901	43,831
Commercial | Commercial and industrial loans | Special mention
Financing Receivable, Modifications
Year One		37	66
Year Two		22	46
Year Three		12	167
Year Four		29	46
Year Five		22	5
Prior		5	21
Revolving Loans		665	2,317
Revolving Loans Converted to Term Loans		0	0
Total		792	2,668
Commercial | Commercial and industrial loans | Substandard
Financing Receivable, Modifications
Year One		19	119
Year Two		52	80
Year Three		36	107
Year Four		69	60
Year Five		52	39
Prior		115	104
Revolving Loans		1,623	2,639
Revolving Loans Converted to Term Loans		0	0
Total		1,966	3,148
Commercial | Commercial and industrial loans | Doubtful
Financing Receivable, Modifications
Year One		0	0
Year Two		0	2
Year Three		0	9
Year Four		0	0
Year Five		0	0
Prior		0	0
Revolving Loans		0	7
Revolving Loans Converted to Term Loans		0	0
Total		0	18
Commercial | Commercial mortgage owner-occupied loans
Financing Receivable, Modifications
Year One		1,104	1,316
Year Two		873	684
Year Three		520	465
Year Four		325	302
Year Five		188	264
Prior		398	467
Revolving Loans		1,301	1,177
Revolving Loans Converted to Term Loans		0	0
Total		4,709	4,675
Commercial | Commercial mortgage owner-occupied loans | Pass
Financing Receivable, Modifications
Year One		1,082	1,047
Year Two		804	655
Year Three		471	416
Year Four		296	288
Year Five		183	249
Prior		331	420
Revolving Loans		1,141	1,025
Revolving Loans Converted to Term Loans		0	0
Total		4,308	4,100
Commercial | Commercial mortgage owner-occupied loans | Special mention
Financing Receivable, Modifications
Year One		0	58
Year Two		31	12
Year Three		46	16
Year Four		17	7
Year Five		2	2
Prior		40	17
Revolving Loans		69	64
Revolving Loans Converted to Term Loans		0	0
Total		205	176
Commercial | Commercial mortgage owner-occupied loans | Substandard
Financing Receivable, Modifications
Year One		22	211
Year Two		38	17
Year Three		3	33
Year Four		12	7
Year Five		3	13
Prior		27	30
Revolving Loans		91	88
Revolving Loans Converted to Term Loans		0	0
Total		196	399
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 Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		0	0
Commercial | Commercial mortgage nonowner-occupied loans
Financing Receivable, Modifications
Year One		884	1,315
Year Two		823	750
Year Three		610	614
Year Four		292	269
Year Five		157	261
Prior		314	375
Revolving Loans		2,527	2,343
Revolving Loans Converted to Term Loans		0	0
Total		5,607	5,927
Commercial | Commercial mortgage nonowner-occupied loans | Pass
Financing Receivable, Modifications
Year One		635	902
Year Two		733	679
Year Three		595	548
Year Four		284	247
Year Five		141	223
Prior		302	341
Revolving Loans		1,977	1,626
Revolving Loans Converted to Term Loans		0	0
Total		4,667	4,566
Commercial | Commercial mortgage nonowner-occupied loans | Special mention
Financing Receivable, Modifications
Year One		89	252
Year Two		12	68
Year Three		11	17
Year Four		5	8
Year Five		7	36
Prior		9	9
Revolving Loans		162	416
Revolving Loans Converted to Term Loans		0	0
Total		295	806
Commercial | Commercial mortgage nonowner-occupied loans | Substandard
Financing Receivable, Modifications
Year One		160	149
Year Two		78	3
Year Three		4	49
Year Four		3	14
Year Five		9	2
Prior		3	25
Revolving Loans		388	301
Revolving Loans Converted to Term Loans		0	0
Total		645	543
Commercial | Commercial mortgage nonowner-occupied loans | Doubtful
Financing Receivable, Modifications
Year One		0	12
Year Two		0	0
Year Three		0	0
Year Four		0	0
Year Five		0	0
Prior		0	0
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		0	12
Commercial | Commercial construction loans
Financing Receivable, Modifications
Year One		67	173
Year Two		108	49
Year Three		11	27
Year Four		37	0
Year Five		0	9
Prior		9	12
Revolving Loans		5,009	5,545
Revolving Loans Converted to Term Loans		0	0
Total		5,241	5,815
Commercial | Commercial construction loans | Pass
Financing Receivable, Modifications
Year One		50	98
Year Two		69	49
Year Three		11	27
Year Four		37	0
Year Five		0	9
Prior		9	12
Revolving Loans		4,488	4,721
Revolving Loans Converted to Term Loans		0	0
Total		4,664	4,916
Commercial | Commercial construction loans | Special mention
Financing Receivable, Modifications
Year One		0	67
Year Two		39	0
Year Three		0	0
Year Four		0	0
Year Five		0	0
Prior		0	0
Revolving Loans		193	591
Revolving Loans Converted to Term Loans		0	0
Total		232	658
Commercial | Commercial construction loans | Substandard
Financing Receivable, Modifications
Year One		17	8
Year Two		0	0
Year Three		0	0
Year Four		0	0
Year Five		0	0
Prior		0	0
Revolving Loans		328	233
Revolving Loans Converted to Term Loans		0	0
Total		345	241
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 Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		0	0
Commercial | Commercial leases
Financing Receivable, Modifications
Year One		1,030	634
Year Two		443	394
Year Three		297	336
Year Four		250	390
Year Five		246	320
Prior		786	841
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		3,052	2,915
Commercial | Commercial leases | Pass
Financing Receivable, Modifications
Year One		1,019	622
Year Two		436	374
Year Three		284	315
Year Four		231	369
Year Five		233	314
Prior		776	824
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		2,979	2,818
Commercial | Commercial leases | Special mention
Financing Receivable, Modifications
Year One		4	5
Year Two		4	16
Year Three		5	5
Year Four		9	0
Year Five		0	0
Prior		8	0
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		30	26
Commercial | Commercial leases | Substandard
Financing Receivable, Modifications
Year One		7	7
Year Two		3	4
Year Three		8	16
Year Four		10	21
Year Five		13	6
Prior		2	17
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		43	71
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 Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		$ 0	$ 0

[1] Includes $154 and $161 of residential mortgage loans measured at fair value at December 31, 2021 and 2020, respectively.

[2] Includes $24 and $55 of other short-term investments, $322 and $756 of portfolio loans and leases, $(2) and $(7) of ALLL, $2 and $5 of other assets, $1 and $2 of other liabilities and $263 and $656 of long-term debt from consolidated VIEs that are included in their respective captions above at December 31, 2021 and 2020, respectively. For further information, refer to Note 12.