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		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Financing Receivable, Modifications
Total portfolio loans and leases	[1],[2]	$ 121,891		$ 121,891		$ 121,480
Residential Mortgage
Financing Receivable, Modifications
Residential mortgage loans		124	$ 133	124	$ 133	123
Residential Mortgage | Federal Housing Administration Loan
Financing Receivable, Modifications
Losses due to claim denials and curtailments		1	$ 1	1	$ 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 portfolio loans and leases		73		73		81
Residential Mortgage | 90 days or more past due | Federal Housing Administration Loan
Financing Receivable, Modifications
Total portfolio loans and leases		169		169		147
Residential Mortgage | Nonperforming
Financing Receivable, Modifications
Residential mortgage loans		3		3		2
Residential Mortgage | Residential mortgage loans
Financing Receivable, Modifications
Year One		631		631		3,199
Year Two		3,209		3,209		5,447
Year Three		5,239		5,239		2,989
Year Four		2,849		2,849		1,056
Year Five		1,002		1,002		354
Prior		4,449		4,449		4,460
Revolving Loans		0		0		0
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		17,379		17,379		17,505
Residential Mortgage | Residential mortgage loans | Performing
Financing Receivable, Modifications
Year One		631		631		3,199
Year Two		3,205		3,205		5,444
Year Three		5,235		5,235		2,985
Year Four		2,844		2,844		1,052
Year Five		998		998		347
Prior		4,332		4,332		4,356
Revolving Loans		0		0		0
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		17,245		17,245		17,383
Residential Mortgage | Residential mortgage loans | Performing | Current
Financing Receivable, Modifications
Year One		631		631		3,195
Year Two		3,202		3,202		5,440
Year Three		5,231		5,231		2,981
Year Four		2,840		2,840		1,051
Year Five		998		998		344
Prior		4,317		4,317		4,336
Revolving Loans		0		0		0
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		17,219		17,219		17,347
Residential Mortgage | Residential mortgage loans | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One		0		0		4
Year Two		2		2		4
Year Three		3		3		3
Year Four		4		4		1
Year Five		0		0		2
Prior		10		10		15
Revolving Loans		0		0		0
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		19		19		29
Residential Mortgage | Residential mortgage loans | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One		0		0		0
Year Two		1		1		0
Year Three		1		1		1
Year Four		0		0		0
Year Five		0		0		1
Prior		5		5		5
Revolving Loans		0		0		0
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		7		7		7
Residential Mortgage | Residential mortgage loans | Nonperforming
Financing Receivable, Modifications
Year One		0		0		0
Year Two		4		4		3
Year Three		4		4		4
Year Four		5		5		4
Year Five		4		4		7
Prior		117		117		104
Revolving Loans		0		0		0
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		134		134		122
Consumer | Home equity
Financing Receivable, Modifications
Year One		35		35		46
Year Two		44		44		3
Year Three		3		3		7
Year Four		6		6		15
Year Five		13		13		17
Prior		111		111		105
Revolving Loans		3,672		3,672		3,827
Revolving Loans Converted to Term Loans		27		27		19
Total portfolio loans and leases		3,911		3,911		4,039
Consumer | Home equity | Performing
Financing Receivable, Modifications
Year One		35		35		46
Year Two		44		44		3
Year Three		3		3		7
Year Four		6		6		15
Year Five		13		13		17
Prior		104		104		97
Revolving Loans		3,619		3,619		3,769
Revolving Loans Converted to Term Loans		26		26		18
Total portfolio loans and leases		3,850		3,850		3,972
Consumer | Home equity | Performing | Current
Financing Receivable, Modifications
Year One		35		35		46
Year Two		44		44		3
Year Three		3		3		7
Year Four		6		6		15
Year Five		13		13		17
Prior		102		102		94
Revolving Loans		3,596		3,596		3,741
Revolving Loans Converted to Term Loans		26		26		18
Total portfolio loans and leases		3,825		3,825		3,941
Consumer | Home equity | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One		0		0		0
Year Two		0		0		0
Year Three		0		0		0
Year Four		0		0		0
Year Five		0		0		0
Prior		1		1		2
Revolving Loans		23		23		28
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		24		24		30
Consumer | Home equity | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One		0		0		0
Year Two		0		0		0
Year Three		0		0		0
Year Four		0		0		0
Year Five		0		0		0
Prior		1		1		1
Revolving Loans		0		0		0
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		1		1		1
Consumer | Home equity | Nonperforming
Financing Receivable, Modifications
Year One		0		0		0
Year Two		0		0		0
Year Three		0		0		0
Year Four		0		0		0
Year Five		0		0		0
Prior		7		7		8
Revolving Loans		53		53		58
Revolving Loans Converted to Term Loans		1		1		1
Total portfolio loans and leases		61		61		67
Consumer | Indirect secured consumer loans
Financing Receivable, Modifications
Year One		2,728		2,728		6,072
Year Two		5,119		5,119		5,923
Year Three		4,881		4,881		2,635
Year Four		2,043		2,043		1,245
Year Five		892		892		431
Prior		434		434		246
Revolving Loans		0		0		0
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		16,097		16,097		16,552
Consumer | Indirect secured consumer loans | Performing
Financing Receivable, Modifications
Year One		2,727		2,727		6,068
Year Two		5,113		5,113		5,917
Year Three		4,876		4,876		2,628
Year Four		2,038		2,038		1,239
Year Five		889		889		427
Prior		431		431		244
Revolving Loans		0		0		0
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		16,074		16,074		16,523
Consumer | Indirect secured consumer loans | Performing | Current
Financing Receivable, Modifications
Year One		2,720		2,720		6,034
Year Two		5,076		5,076		5,875
Year Three		4,840		4,840		2,600
Year Four		2,018		2,018		1,217
Year Five		875		875		416
Prior		422		422		239
Revolving Loans		0		0		0
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		15,951		15,951		16,381
Consumer | Indirect secured consumer loans | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One		7		7		34
Year Two		37		37		42
Year Three		36		36		28
Year Four		20		20		22
Year Five		14		14		11
Prior		9		9		5
Revolving Loans		0		0		0
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		123		123		142
Consumer | Indirect secured consumer loans | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One		0		0		0
Year Two		0		0		0
Year Three		0		0		0
Year Four		0		0		0
Year Five		0		0		0
Prior		0		0		0
Revolving Loans		0		0		0
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		0		0		0
Consumer | Indirect secured consumer loans | Nonperforming
Financing Receivable, Modifications
Year One		1		1		4
Year Two		6		6		6
Year Three		5		5		7
Year Four		5		5		6
Year Five		3		3		4
Prior		3		3		2
Revolving Loans		0		0		0
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		23		23		29
Consumer | Credit card
Financing Receivable, Modifications
Year One		0		0		0
Year Two		0		0		0
Year Three		0		0		0
Year Four		0		0		0
Year Five		0		0		0
Prior		0		0		0
Revolving Loans		1,818		1,818		1,874
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		1,818		1,818		1,874
Consumer | Credit card | Performing
Financing Receivable, Modifications
Year One		0		0		0
Year Two		0		0		0
Year Three		0		0		0
Year Four		0		0		0
Year Five		0		0		0
Prior		0		0		0
Revolving Loans		1,788		1,788		1,847
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		1,788		1,788		1,847
Consumer | Credit card | Performing | Current
Financing Receivable, Modifications
Year One		0		0		0
Year Two		0		0		0
Year Three		0		0		0
Year Four		0		0		0
Year Five		0		0		0
Prior		0		0		0
Revolving Loans		1,751		1,751		1,808
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		1,751		1,751		1,808
Consumer | Credit card | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One		0		0		0
Year Two		0		0		0
Year Three		0		0		0
Year Four		0		0		0
Year Five		0		0		0
Prior		0		0		0
Revolving Loans		20		20		21
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		20		20		21
Consumer | Credit card | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One		0		0		0
Year Two		0		0		0
Year Three		0		0		0
Year Four		0		0		0
Year Five		0		0		0
Prior		0		0		0
Revolving Loans		17		17		18
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		17		17		18
Consumer | Credit card | Nonperforming
Financing Receivable, Modifications
Year One		0		0		0
Year Two		0		0		0
Year Three		0		0		0
Year Four		0		0		0
Year Five		0		0		0
Prior		0		0		0
Revolving Loans		30		30		27
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		30		30		27
Consumer | Other consumer loans
Financing Receivable, Modifications
Year One		1,587		1,587		2,720
Year Two		2,940		2,940		547
Year Three		366		366		358
Year Four		182		182		171
Year Five		101		101		114
Prior		124		124		149
Revolving Loans		873		873		913
Revolving Loans Converted to Term Loans		37		37		26
Total portfolio loans and leases		6,210		6,210		4,998
Consumer | Other consumer loans | Performing
Financing Receivable, Modifications
Year One		1,586		1,586		2,718
Year Two		2,915		2,915		546
Year Three		363		363		358
Year Four		181		181		171
Year Five		100		100		114
Prior		123		123		148
Revolving Loans		872		872		912
Revolving Loans Converted to Term Loans		37		37		26
Total portfolio loans and leases		6,177		6,177		4,993
Consumer | Other consumer loans | Performing | Current
Financing Receivable, Modifications
Year One		1,580		1,580		2,704
Year Two		2,898		2,898		540
Year Three		360		360		355
Year Four		179		179		169
Year Five		98		98		112
Prior		122		122		146
Revolving Loans		870		870		908
Revolving Loans Converted to Term Loans		36		36		26
Total portfolio loans and leases		6,143		6,143		4,960
Consumer | Other consumer loans | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One		6		6		14
Year Two		17		17		6
Year Three		3		3		3
Year Four		2		2		2
Year Five		2		2		2
Prior		1		1		2
Revolving Loans		2		2		3
Revolving Loans Converted to Term Loans		1		1		0
Total portfolio loans and leases		34		34		32
Consumer | Other consumer loans | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One		0		0		0
Year Two		0		0		0
Year Three		0		0		0
Year Four		0		0		0
Year Five		0		0		0
Prior		0		0		0
Revolving Loans		0		0		1
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		0		0		1
Consumer | Other consumer loans | Nonperforming
Financing Receivable, Modifications
Year One		1		1		2
Year Two		25		25		1
Year Three		3		3		0
Year Four		1		1		0
Year Five		1		1		0
Prior		1		1		1
Revolving Loans		1		1		1
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		33		33		5
Residential Mortgage and Consumer
Financing Receivable, Modifications
Year One		4,981		4,981		12,037
Year Two		11,312		11,312		11,920
Year Three		10,489		10,489		5,989
Year Four		5,080		5,080		2,487
Year Five		2,008		2,008		916
Prior		5,118		5,118		4,960
Revolving Loans		6,363		6,363		6,614
Revolving Loans Converted to Term Loans		64		64		45
Total portfolio loans and leases		45,415		45,415		44,968
Residential Mortgage and Consumer | Performing
Financing Receivable, Modifications
Year One		4,979		4,979		12,031
Year Two		11,277		11,277		11,910
Year Three		10,477		10,477		5,978
Year Four		5,069		5,069		2,477
Year Five		2,000		2,000		905
Prior		4,990		4,990		4,845
Revolving Loans		6,279		6,279		6,528
Revolving Loans Converted to Term Loans		63		63		44
Total portfolio loans and leases		45,134		45,134		44,718
Residential Mortgage and Consumer | Performing | Current
Financing Receivable, Modifications
Year One		4,966		4,966		11,979
Year Two		11,220		11,220		11,858
Year Three		10,434		10,434		5,943
Year Four		5,043		5,043		2,452
Year Five		1,984		1,984		889
Prior		4,963		4,963		4,815
Revolving Loans		6,217		6,217		6,457
Revolving Loans Converted to Term Loans		62		62		44
Total portfolio loans and leases		44,889		44,889		44,437
Residential Mortgage and Consumer | Performing | 30-89 days past due
Financing Receivable, Modifications
Year One		13		13		52
Year Two		56		56		52
Year Three		42		42		34
Year Four		26		26		25
Year Five		16		16		15
Prior		21		21		24
Revolving Loans		45		45		52
Revolving Loans Converted to Term Loans		1		1		0
Total portfolio loans and leases		220		220		254
Residential Mortgage and Consumer | Performing | 90 days or more past due
Financing Receivable, Modifications
Year One		0		0		0
Year Two		1		1		0
Year Three		1		1		1
Year Four		0		0		0
Year Five		0		0		1
Prior		6		6		6
Revolving Loans		17		17		19
Revolving Loans Converted to Term Loans		0		0		0
Total portfolio loans and leases		25		25		27
Residential Mortgage and Consumer | Nonperforming
Financing Receivable, Modifications
Year One		2		2		6
Year Two		35		35		10
Year Three		12		12		11
Year Four		11		11		10
Year Five		8		8		11
Prior		128		128		115
Revolving Loans		84		84		86
Revolving Loans Converted to Term Loans		1		1		1
Total portfolio loans and leases		$ 281		$ 281		$ 250

[1] Includes $1 and $17 of other short-term investments, $42 and $185 of portfolio loans and leases, $(1) and $(2) of ALLL, $0 and $2 of other assets, $9 and $9 of other liabilities, and $37 and $118 of long-term debt from consolidated VIEs that are included in their respective captions above at June 30, 2023 and December 31, 2022, respectively. For further information, refer to Note 11.

[2] Includes $124 and $123 of residential mortgage loans measured at fair value at June 30, 2023 and December 31, 2022, respectively.