Loans and Leases - Total Loans and Leases Managed by the Bancorp and Net Charge-Offs (Recoveries) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Carrying Value		$ 117,612	$ 122,487
Net Charge-Offs (Recoveries)		388	227
90 Days Past Due and Still Accruing		36	40
Loans and leases held for sale	[1]	378	1,007
Total portfolio loans and leases	[2],[3]	117,234	121,480
Residential mortgage loans
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Carrying Value		17,360	18,562
Net Charge-Offs (Recoveries)		0	(2)
90 Days Past Due and Still Accruing		7	7
Commercial
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Total portfolio loans and leases		72,746	76,389
Commercial | Commercial and industrial loans
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Carrying Value		53,311	57,305
Net Charge-Offs (Recoveries)		155	96
90 Days Past Due and Still Accruing		8	11
Commercial | Commercial mortgage loans
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Carrying Value		11,276	11,020
Net Charge-Offs (Recoveries)		(2)	(1)
90 Days Past Due and Still Accruing		0	0
Commercial | Commercial construction loans
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Carrying Value		5,621	5,433
Net Charge-Offs (Recoveries)		1	2
90 Days Past Due and Still Accruing		0	0
Commercial | Commercial leases
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Carrying Value		2,582	2,704
Net Charge-Offs (Recoveries)		(1)	4
90 Days Past Due and Still Accruing		0	2
Consumer
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Total portfolio loans and leases		44,488	45,091
Consumer | Home equity
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Carrying Value		3,916	4,039
Net Charge-Offs (Recoveries)		1	(2)
90 Days Past Due and Still Accruing		0	1
Consumer | Indirect secured consumer loans
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Carrying Value		14,965	16,552
Net Charge-Offs (Recoveries)		72	36
90 Days Past Due and Still Accruing		0	0
Consumer | Credit card
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Carrying Value		1,865	1,874
Net Charge-Offs (Recoveries)		64	52
90 Days Past Due and Still Accruing		21	18
Consumer | Other consumer loans:
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Carrying Value		6,716	4,998
Net Charge-Offs (Recoveries)		98	42
90 Days Past Due and Still Accruing		$ 0	$ 1

[1] Includes $334 and $600 of residential mortgage loans held for sale measured at fair value at December 31, 2023 and 2022, respectively.

[2] Includes $55 and $17 of other short-term investments, $1,573 and $185 of portfolio loans and leases, $(28) and $(2) of ALLL, $10 and $2 of other assets, $14 and $9 of other liabilities and $1,409 and $118 of long-term debt from consolidated VIEs that are included in their respective captions above at December 31, 2023 and 2022, respectively. For further information, refer to Note 12.

[3] Includes $116 and $123 of residential mortgage loans measured at fair value at December 31, 2023 and 2022, respectively.