Credit Quality and the Allowance for Loan and Lease Losses - Summary of the Credit Risk Profile of the Bancorp's Residential Mortgage and Consumer Portfolio Segments by Class (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Modifications
Total	[1],[2]	$ 121,480	$ 112,050
Residential Mortgage
Financing Receivable, Modifications
Loans measured at FV		123	154
Residential Mortgage | Federal Housing Administration Loan
Financing Receivable, Modifications
Losses due to claim denials and curtailments		2	2
Residential Mortgage | 30-89 days past due
Financing Receivable, Modifications
Loans measured at FV		1	2
Residential Mortgage | 30-89 days past due | Federal Housing Administration Loan
Financing Receivable, Modifications
Total		81	49
Residential Mortgage | 90 days or more past due
Financing Receivable, Modifications
Loans measured at FV			2
Residential Mortgage | 90 days or more past due | Federal Housing Administration Loan
Financing Receivable, Modifications
Total		147	139
Residential Mortgage | Nonperforming
Financing Receivable, Modifications
Loans measured at FV		2
Residential Mortgage | Residential mortgage loans
Financing Receivable, Modifications
Year One		3,199	5,887
Year Two		5,447	3,312
Year Three		2,989	1,300
Year Four		1,056	422
Year Five		354	966
Prior		4,460	4,356
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		17,505	16,243
Residential Mortgage | Residential mortgage loans | Performing
Financing Receivable, Modifications
Year One		3,199	5,887
Year Two		5,444	3,312
Year Three		2,985	1,299
Year Four		1,052	422
Year Five		347	964
Prior		4,356	4,326
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		17,383	16,210
Residential Mortgage | Residential mortgage loans | Performing | Current
Financing Receivable, Modifications
Year One		3,195	5,886
Year Two		5,440	3,309
Year Three		2,981	1,294
Year Four		1,051	418
Year Five		344	954
Prior		4,336	4,261
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		17,347	16,122
Residential Mortgage | Residential mortgage loans | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One		4	1
Year Two		4	1
Year Three		3	1
Year Four		1	1
Year Five		2	1
Prior		15	13
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		29	18
Residential Mortgage | Residential mortgage loans | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One		0	0
Year Two		0	2
Year Three		1	4
Year Four		0	3
Year Five		1	9
Prior		5	52
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		7	70
Residential Mortgage | Residential mortgage loans | Nonperforming
Financing Receivable, Modifications
Year One		0	0
Year Two		3	0
Year Three		4	1
Year Four		4	0
Year Five		7	2
Prior		104	30
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		122	33
Consumer
Financing Receivable, Modifications
Total		45,091	41,782
Consumer | Home equity
Financing Receivable, Modifications
Year One		46	2
Year Two		3	6
Year Three		7	13
Year Four		15	18
Year Five		17	2
Prior		105	126
Revolving Loans		3,827	3,904
Revolving Loans Converted to Term Loans		19	13
Total		4,039	4,084
Consumer | Home equity | Performing
Financing Receivable, Modifications
Year One		46	2
Year Two		3	6
Year Three		7	13
Year Four		15	18
Year Five		17	2
Prior		97	117
Revolving Loans		3,769	3,837
Revolving Loans Converted to Term Loans		18	12
Total		3,972	4,007
Consumer | Home equity | Performing | Current
Financing Receivable, Modifications
Year One		46	2
Year Two		3	6
Year Three		7	13
Year Four		15	18
Year Five		17	2
Prior		94	113
Revolving Loans		3,741	3,815
Revolving Loans Converted to Term Loans		18	12
Total		3,941	3,981
Consumer | Home equity | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One		0	0
Year Two		0	0
Year Three		0	0
Year Four		0	0
Year Five		0	0
Prior		2	3
Revolving Loans		28	22
Revolving Loans Converted to Term Loans		0	0
Total		30	25
Consumer | Home equity | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One		0	0
Year Two		0	0
Year Three		0	0
Year Four		0	0
Year Five		0	0
Prior		1	1
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		1	1
Consumer | Home equity | Nonperforming
Financing Receivable, Modifications
Year One		0	0
Year Two		0	0
Year Three		0	0
Year Four		0	0
Year Five		0	0
Prior		8	9
Revolving Loans		58	67
Revolving Loans Converted to Term Loans		1	1
Total		67	77
Consumer | Indirect secured consumer loans
Financing Receivable, Modifications
Year One		6,072	8,760
Year Two		5,923	4,244
Year Three		2,635	2,253
Year Four		1,245	926
Year Five		431	401
Prior		246	199
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		16,552	16,783
Consumer | Indirect secured consumer loans | Performing
Financing Receivable, Modifications
Year One		6,068	8,760
Year Two		5,917	4,232
Year Three		2,628	2,248
Year Four		1,239	921
Year Five		427	398
Prior		244	197
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		16,523	16,756
Consumer | Indirect secured consumer loans | Performing | Current
Financing Receivable, Modifications
Year One		6,034	8,732
Year Two		5,875	4,206
Year Three		2,600	2,221
Year Four		1,217	902
Year Five		416	389
Prior		239	194
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		16,381	16,644
Consumer | Indirect secured consumer loans | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One		34	26
Year Two		42	24
Year Three		28	25
Year Four		22	17
Year Five		11	8
Prior		5	3
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		142	103
Consumer | Indirect secured consumer loans | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One		0	2
Year Two		0	2
Year Three		0	2
Year Four		0	2
Year Five		0	1
Prior		0	0
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		0	9
Consumer | Indirect secured consumer loans | Nonperforming
Financing Receivable, Modifications
Year One		4	0
Year Two		6	12
Year Three		7	5
Year Four		6	5
Year Five		4	3
Prior		2	2
Revolving Loans		0	0
Revolving Loans Converted to Term Loans		0	0
Total		29	27
Consumer | Credit card
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		1,874	1,766
Revolving Loans Converted to Term Loans		0	0
Total		1,874	1,766
Consumer | Credit card | Performing
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		1,847	1,743
Revolving Loans Converted to Term Loans		0	0
Total		1,847	1,743
Consumer | Credit card | Performing | Current
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		1,808	1,710
Revolving Loans Converted to Term Loans		0	0
Total		1,808	1,710
Consumer | Credit card | Performing | 30-89 days past due
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		21	18
Revolving Loans Converted to Term Loans		0	0
Total		21	18
Consumer | Credit card | Performing | 90 days or more past due
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		18	15
Revolving Loans Converted to Term Loans		0	0
Total		18	15
Consumer | Credit card | Nonperforming
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		27	23
Revolving Loans Converted to Term Loans		0	0
Total		27	23
Consumer | Other consumer loans:
Financing Receivable, Modifications
Year One		2,720	695
Year Two		547	532
Year Three		358	279
Year Four		171	176
Year Five		114	106
Prior		149	47
Revolving Loans		913	916
Revolving Loans Converted to Term Loans		26	1
Total		4,998	2,752
Consumer | Other consumer loans: | Performing
Financing Receivable, Modifications
Year One		2,718	695
Year Two		546	532
Year Three		358	279
Year Four		171	176
Year Five		114	106
Prior		148	47
Revolving Loans		912	915
Revolving Loans Converted to Term Loans		26	1
Total		4,993	2,751
Consumer | Other consumer loans: | Performing | Current
Financing Receivable, Modifications
Year One		2,704	692
Year Two		540	530
Year Three		355	275
Year Four		169	174
Year Five		112	105
Prior		146	47
Revolving Loans		908	913
Revolving Loans Converted to Term Loans		26	0
Total		4,960	2,736
Consumer | Other consumer loans: | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One		14	3
Year Two		6	2
Year Three		3	3
Year Four		2	2
Year Five		2	1
Prior		2	0
Revolving Loans		3	2
Revolving Loans Converted to Term Loans		0	1
Total		32	14
Consumer | Other consumer loans: | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One		0	0
Year Two		0	0
Year Three		0	1
Year Four		0	0
Year Five		0	0
Prior		0	0
Revolving Loans		1	0
Revolving Loans Converted to Term Loans		0	0
Total		1	1
Consumer | Other consumer loans: | Nonperforming
Financing Receivable, Modifications
Year One		2	0
Year Two		1	0
Year Three		0	0
Year Four		0	0
Year Five		0	0
Prior		1	0
Revolving Loans		1	1
Revolving Loans Converted to Term Loans		0	0
Total		5	1
Residential Mortgage and Consumer
Financing Receivable, Modifications
Year One		12,037	15,344
Year Two		11,920	8,094
Year Three		5,989	3,845
Year Four		2,487	1,542
Year Five		916	1,475
Prior		4,960	4,728
Revolving Loans		6,614	6,586
Revolving Loans Converted to Term Loans		45	14
Total		44,968	41,628
Residential Mortgage and Consumer | Performing
Financing Receivable, Modifications
Year One		12,031	15,344
Year Two		11,910	8,082
Year Three		5,978	3,839
Year Four		2,477	1,537
Year Five		905	1,470
Prior		4,845	4,687
Revolving Loans		6,528	6,495
Revolving Loans Converted to Term Loans		44	13
Total		44,718	41,467
Residential Mortgage and Consumer | Performing | Current
Financing Receivable, Modifications
Year One		11,979	15,312
Year Two		11,858	8,051
Year Three		5,943	3,803
Year Four		2,452	1,512
Year Five		889	1,450
Prior		4,815	4,615
Revolving Loans		6,457	6,438
Revolving Loans Converted to Term Loans		44	12
Total		44,437	41,193
Residential Mortgage and Consumer | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One		52	30
Year Two		52	27
Year Three		34	29
Year Four		25	20
Year Five		15	10
Prior		24	19
Revolving Loans		52	42
Revolving Loans Converted to Term Loans		0	1
Total		254	178
Residential Mortgage and Consumer | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One		0	2
Year Two		0	4
Year Three		1	7
Year Four		0	5
Year Five		1	10
Prior		6	53
Revolving Loans		19	15
Revolving Loans Converted to Term Loans		0	0
Total		27	96
Residential Mortgage and Consumer | Nonperforming
Financing Receivable, Modifications
Year One		6	0
Year Two		10	12
Year Three		11	6
Year Four		10	5
Year Five		11	5
Prior		115	41
Revolving Loans		86	91
Revolving Loans Converted to Term Loans		1	1
Total		$ 250	$ 161

[1] Includes $123 and $154 of residential mortgage loans measured at fair value at December 31, 2022 and 2021, respectively.

[2] Includes $17 and $24 of other short-term investments, $185 and $322 of portfolio loans and leases, $(2) and $(2) of ALLL, $2 and $2 of other assets, $9 and $1 of other liabilities and $118 and $263 of long-term debt from consolidated VIEs that are included in their respective captions above at December 31, 2022 and 2021, respectively. For further information, refer to Note 12.