Credit Quality and the Allowance for Loan and Lease Losses - Summary of the Bancorp's Nonaccrual Loans and Leases by Class (Details) - USD ($) $ in Millions		Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Modifications
With an ALLL		$ 337	$ 304
No Related ALLL		209	223
Total		546	527
Loans and leases held for sale	[1]	1,940	4,415
Total portfolio loans and leases	[2],[3]	119,999	112,050
Nonperforming
Financing Receivable, Modifications
Loans and leases held for sale		0	15
Nonperforming | Government Insured
Financing Receivable, Modifications
Total portfolio loans and leases		14	26
Restructured nonaccrual loans and leases		8	11
Commercial
Financing Receivable, Modifications
With an ALLL		180	192
No Related ALLL		118	145
Total		298	337
Commercial | Commercial and industrial loans
Financing Receivable, Modifications
With an ALLL		151	151
No Related ALLL		103	128
Total		254	279
Loans and leases held for sale		68	7
Commercial | Commercial mortgage owner-occupied loans
Financing Receivable, Modifications
With an ALLL		8	10
No Related ALLL		8	13
Total		16	23
Commercial | Commercial mortgage nonowner-occupied loans
Financing Receivable, Modifications
With an ALLL		21	22
No Related ALLL		3	3
Total		24	25
Commercial | Commercial construction loans
Financing Receivable, Modifications
With an ALLL		0	6
No Related ALLL		2	0
Total		2	6
Commercial | Commercial leases
Financing Receivable, Modifications
With an ALLL		0	3
No Related ALLL		2	1
Total		2	4
Loans and leases held for sale		1	1
Residential Mortgage
Financing Receivable, Modifications
With an ALLL		70	14
No Related ALLL		45	19
Total		115	33
Consumer
Financing Receivable, Modifications
With an ALLL		87	98
No Related ALLL		22	30
Total		109	128
Consumer | Home equity
Financing Receivable, Modifications
With an ALLL		49	53
No Related ALLL		19	24
Total		68	77
Total portfolio loans and leases		4,000	4,084
Consumer | Home equity | Nonperforming
Financing Receivable, Modifications
Total portfolio loans and leases		68	77
Consumer | Indirect secured consumer loans
Financing Receivable, Modifications
With an ALLL		12	21
No Related ALLL		3	6
Total		15	27
Total portfolio loans and leases		16,646	16,783
Consumer | Indirect secured consumer loans | Nonperforming
Financing Receivable, Modifications
Total portfolio loans and leases		15	27
Consumer | Credit card
Financing Receivable, Modifications
With an ALLL		23	23
No Related ALLL		0	0
Total		23	23
Total portfolio loans and leases		1,770	1,766
Consumer | Credit card | Nonperforming
Financing Receivable, Modifications
Total portfolio loans and leases		23	23
Consumer | Other consumer loans
Financing Receivable, Modifications
With an ALLL		3	1
No Related ALLL		0	0
Total		3	1
Total portfolio loans and leases		4,205	2,752
Consumer | Other consumer loans | Nonperforming
Financing Receivable, Modifications
Total portfolio loans and leases		3	1
Nonaccrual Portfolio Loans and Leases
Financing Receivable, Modifications
With an ALLL		337	304
No Related ALLL		185	194
Total		522	498
OREO and Other Repossessed Assets
Financing Receivable, Modifications
With an ALLL		0	0
No Related ALLL		24	29
Total		$ 24	$ 29

[1] Includes $1,107 and $1,023 of residential mortgage loans held for sale measured at fair value at September 30, 2022 and December 31, 2021, respectively.

[2] Includes $125 and $154 of residential mortgage loans measured at fair value at September 30, 2022 and December 31, 2021, respectively.

[3] Includes $19 and $24 of other short-term investments, $223 and $322 of portfolio loans and leases, $(3) and $(2) of ALLL, $2 and $2 of other assets, $9 and $1 of other liabilities, and $156 and $263 of long-term debt from consolidated VIEs that are included in their respective captions above at September 30, 2022 and December 31, 2021, respectively. For further information, refer to Note 12.