Loans and Leases - Total Loans and Leases Managed by the Bancorp (Details) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Carrying Value		$ 116,824	$ 117,612
90 Days Past Due and Still Accruing		35	36
Total loans and leases held for sale	[1]	339	378
Total portfolio loans and leases		116,485	117,234
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		17,302	17,360
90 Days Past Due and Still Accruing		5	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		71,916	72,746
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		52,239	53,311
90 Days Past Due and Still Accruing		9	8
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		11,346	11,276
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		5,789	5,621
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		2,574	2,582
90 Days Past Due and Still Accruing		2	0
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		44,569	44,488
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		3,883	3,916
90 Days Past Due and Still Accruing		0	0
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		15,306	14,965
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		1,737	1,865
90 Days Past Due and Still Accruing		19	21
Consumer | Solar energy installation loans
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Carrying Value		3,871	3,728
90 Days Past Due and Still Accruing		0	0
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		2,777	2,988
90 Days Past Due and Still Accruing		$ 0	$ 0

[1] Includes $307 and $334 of residential mortgage loans held for sale measured at fair value at March 31, 2024 and December 31, 2023, respectively.