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, 2021	Dec. 31, 2020
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together
Carrying Value		$ 116,465	$ 113,523
Loans and leases held for sale	[1]	4,415	4,741
Total portfolio loans and leases	[2],[3]	112,050	108,782
90 Days Past Due and Still Accruing		117	163
Net Charge-Offs (Recoveries)		174	471
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		20,791	20,393
90 Days Past Due and Still Accruing		72	70
Net Charge-Offs (Recoveries)		(4)	2
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		70,268	68,997
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		51,666	49,895
90 Days Past Due and Still Accruing		17	39
Net Charge-Offs (Recoveries)		60	198
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		10,329	10,609
90 Days Past Due and Still Accruing		1	8
Net Charge-Offs (Recoveries)		8	45
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		5,241	5,815
90 Days Past Due and Still Accruing		1	0
Net Charge-Offs (Recoveries)		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		3,053	2,954
90 Days Past Due and Still Accruing		0	1
Net Charge-Offs (Recoveries)		(1)	23
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		41,782	39,785
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		4,084	5,183
90 Days Past Due and Still Accruing		1	2
Net Charge-Offs (Recoveries)		(4)	5
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		16,783	13,653
90 Days Past Due and Still Accruing		9	10
Net Charge-Offs (Recoveries)		14	32
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		1,766	2,007
90 Days Past Due and Still Accruing		15	31
Net Charge-Offs (Recoveries)		70	126
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		2,752	3,014
90 Days Past Due and Still Accruing		1	2
Net Charge-Offs (Recoveries)		$ 31	$ 40

[1] Includes $1,023 and $1,481 of residential mortgage loans held for sale measured at fair value at December 31, 2021 and 2020, respectively.

[2] Includes $154 and $161 of residential mortgage loans measured at fair value at December 31, 2021 and 2020, respectively.

[3] Includes $24 and $55 of other short-term investments, $322 and $756 of portfolio loans and leases, $(2) and $(7) of ALLL, $2 and $5 of other assets, $1 and $2 of other liabilities and $263 and $656 of long-term debt from consolidated VIEs that are included in their respective captions above at December 31, 2021 and 2020, respectively. For further information, refer to Note 12.