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	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Financing Receivable, Modifications
Total	$ 122,857		$ 121,480
Residential Mortgage
Financing Receivable, Modifications
Residential mortgage loans	128	$ 145	123
Residential Mortgage | Federal Housing Administration Loan
Financing Receivable, Modifications
Losses due to claim denials and curtailments	0	$ 1
Residential Mortgage | 30-89 days past due
Financing Receivable, Modifications
Residential mortgage loans			1
Residential Mortgage | 30-89 days past due | Federal Housing Administration Loan
Financing Receivable, Modifications
Total	76		81
Residential Mortgage | 90 days or more past due
Financing Receivable, Modifications
Residential mortgage loans			2
Residential Mortgage | 90 days or more past due | Federal Housing Administration Loan
Financing Receivable, Modifications
Total	154		147
Residential Mortgage | Nonperforming
Financing Receivable, Modifications
Residential mortgage loans	3
Residential Mortgage | Residential mortgage loans
Financing Receivable, Modifications
Year One	249		3,199
Year Two	3,225		5,447
Year Three	5,362		2,989
Year Four	2,938		1,056
Year Five	1,034		354
Prior	4,672		4,460
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	17,480		17,505
Residential Mortgage | Residential mortgage loans | Performing
Financing Receivable, Modifications
Year One	249		3,199
Year Two	3,224		5,444
Year Three	5,359		2,985
Year Four	2,934		1,052
Year Five	1,030		347
Prior	4,558		4,356
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	17,354		17,383
Residential Mortgage | Residential mortgage loans | Performing | Current
Financing Receivable, Modifications
Year One	249		3,195
Year Two	3,222		5,440
Year Three	5,355		2,981
Year Four	2,931		1,051
Year Five	1,028		344
Prior	4,543		4,336
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	17,328		17,347
Residential Mortgage | Residential mortgage loans | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One	0		4
Year Two	1		4
Year Three	2		3
Year Four	3		1
Year Five	1		2
Prior	10		15
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	17		29
Residential Mortgage | Residential mortgage loans | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One	0		0
Year Two	1		0
Year Three	2		1
Year Four	0		0
Year Five	1		1
Prior	5		5
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	9		7
Residential Mortgage | Residential mortgage loans | Nonperforming
Financing Receivable, Modifications
Year One	0		0
Year Two	1		3
Year Three	3		4
Year Four	4		4
Year Five	4		7
Prior	114		104
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	126		122
Consumer | Home equity
Financing Receivable, Modifications
Year One	14		46
Year Two	45		3
Year Three	3		7
Year Four	7		15
Year Five	14		17
Prior	116		105
Revolving Loans	3,744		3,827
Revolving Loans Converted to Term Loans	15		19
Total	3,958		4,039
Consumer | Home equity | Performing
Financing Receivable, Modifications
Year One	14		46
Year Two	45		3
Year Three	3		7
Year Four	7		15
Year Five	14		17
Prior	109		97
Revolving Loans	3,684		3,769
Revolving Loans Converted to Term Loans	14		18
Total	3,890		3,972
Consumer | Home equity | Performing | Current
Financing Receivable, Modifications
Year One	14		46
Year Two	45		3
Year Three	3		7
Year Four	7		15
Year Five	14		17
Prior	106		94
Revolving Loans	3,663		3,741
Revolving Loans Converted to Term Loans	14		18
Total	3,866		3,941
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		2
Revolving Loans	21		28
Revolving Loans Converted to Term Loans	0		0
Total	23		30
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	7		8
Revolving Loans	60		58
Revolving Loans Converted to Term Loans	1		1
Total	68		67
Consumer | Indirect secured consumer loans
Financing Receivable, Modifications
Year One	1,597		6,072
Year Two	5,563		5,923
Year Three	5,393		2,635
Year Four	2,328		1,245
Year Five	1,060		431
Prior	543		246
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	16,484		16,552
Consumer | Indirect secured consumer loans | Performing
Financing Receivable, Modifications
Year One	1,597		6,068
Year Two	5,558		5,917
Year Three	5,388		2,628
Year Four	2,321		1,239
Year Five	1,055		427
Prior	538		244
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	16,457		16,523
Consumer | Indirect secured consumer loans | Performing | Current
Financing Receivable, Modifications
Year One	1,595		6,034
Year Two	5,526		5,875
Year Three	5,355		2,600
Year Four	2,302		1,217
Year Five	1,041		416
Prior	528		239
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	16,347		16,381
Consumer | Indirect secured consumer loans | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One	2		34
Year Two	32		42
Year Three	33		28
Year Four	19		22
Year Five	14		11
Prior	10		5
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	110		142
Consumer | Indirect secured consumer loans | 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	0		0
Revolving Loans Converted to Term Loans	0		0
Total	0		0
Consumer | Indirect secured consumer loans | Nonperforming
Financing Receivable, Modifications
Year One	0		4
Year Two	5		6
Year Three	5		7
Year Four	7		6
Year Five	5		4
Prior	5		2
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	0		0
Total	27		29
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	1,761		1,874
Revolving Loans Converted to Term Loans	0		0
Total	1,761		1,874
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	1,732		1,847
Revolving Loans Converted to Term Loans	0		0
Total	1,732		1,847
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	1,696		1,808
Revolving Loans Converted to Term Loans	0		0
Total	1,696		1,808
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	18		21
Revolving Loans Converted to Term Loans	0		0
Total	18		21
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		18
Revolving Loans Converted to Term Loans	0		0
Total	18		18
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	29		27
Revolving Loans Converted to Term Loans	0		0
Total	29		27
Consumer | Other consumer loans
Financing Receivable, Modifications
Year One	722		2,720
Year Two	2,951		547
Year Three	487		358
Year Four	325		171
Year Five	151		114
Prior	233		149
Revolving Loans	907		913
Revolving Loans Converted to Term Loans	31		26
Total	5,807		4,998
Consumer | Other consumer loans | Performing
Financing Receivable, Modifications
Year One	722		2,718
Year Two	2,948		546
Year Three	486		358
Year Four	325		171
Year Five	151		114
Prior	232		148
Revolving Loans	906		912
Revolving Loans Converted to Term Loans	31		26
Total	5,801		4,993
Consumer | Other consumer loans | Performing | Current
Financing Receivable, Modifications
Year One	722		2,704
Year Two	2,928		540
Year Three	481		355
Year Four	323		169
Year Five	149		112
Prior	229		146
Revolving Loans	903		908
Revolving Loans Converted to Term Loans	31		26
Total	5,766		4,960
Consumer | Other consumer loans | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One	0		14
Year Two	19		6
Year Three	5		3
Year Four	2		2
Year Five	2		2
Prior	3		2
Revolving Loans	3		3
Revolving Loans Converted to Term Loans	0		0
Total	34		32
Consumer | Other consumer loans | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One	0		0
Year Two	1		0
Year Three	0		0
Year Four	0		0
Year Five	0		0
Prior	0		0
Revolving Loans	0		1
Revolving Loans Converted to Term Loans	0		0
Total	1		1
Consumer | Other consumer loans | Nonperforming
Financing Receivable, Modifications
Year One	0		2
Year Two	3		1
Year Three	1		0
Year Four	0		0
Year Five	0		0
Prior	1		1
Revolving Loans	1		1
Revolving Loans Converted to Term Loans	0		0
Total	6		5
Residential Mortgage and Consumer
Financing Receivable, Modifications
Year One	2,582		12,037
Year Two	11,784		11,920
Year Three	11,245		5,989
Year Four	5,598		2,487
Year Five	2,259		916
Prior	5,564		4,960
Revolving Loans	6,412		6,614
Revolving Loans Converted to Term Loans	46		45
Total	45,490		44,968
Residential Mortgage and Consumer | Performing
Financing Receivable, Modifications
Year One	2,582		12,031
Year Two	11,775		11,910
Year Three	11,236		5,978
Year Four	5,587		2,477
Year Five	2,250		905
Prior	5,437		4,845
Revolving Loans	6,322		6,528
Revolving Loans Converted to Term Loans	45		44
Total	45,234		44,718
Residential Mortgage and Consumer | Performing | Current
Financing Receivable, Modifications
Year One	2,580		11,979
Year Two	11,721		11,858
Year Three	11,194		5,943
Year Four	5,563		2,452
Year Five	2,232		889
Prior	5,406		4,815
Revolving Loans	6,262		6,457
Revolving Loans Converted to Term Loans	45		44
Total	45,003		44,437
Residential Mortgage and Consumer | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One	2		52
Year Two	52		52
Year Three	40		34
Year Four	24		25
Year Five	17		15
Prior	25		24
Revolving Loans	42		52
Revolving Loans Converted to Term Loans	0		0
Total	202		254
Residential Mortgage and Consumer | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One	0		0
Year Two	2		0
Year Three	2		1
Year Four	0		0
Year Five	1		1
Prior	6		6
Revolving Loans	18		19
Revolving Loans Converted to Term Loans	0		0
Total	29		27
Residential Mortgage and Consumer | Nonperforming
Financing Receivable, Modifications
Year One	0		6
Year Two	9		10
Year Three	9		11
Year Four	11		10
Year Five	9		11
Prior	127		115
Revolving Loans	90		86
Revolving Loans Converted to Term Loans	1		1
Total	$ 256		$ 250