Loans & Leases - Total Loans And Leases Managed By The Bancorp (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	$ 110,632		$ 110,632		$ 95,872
Balance of Loans 90 days or More Past Due	132		132		93
Net Charge-Offs	99	$ 72	256	$ 247
Commercial and Industrial Loans | Commercial Portfolio Segment
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	50,854		50,854		44,407
Balance of Loans 90 days or More Past Due	15		15		4
Net Charge-Offs	29	28	67	102
Commercial mortgage loans | Commercial Portfolio Segment
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	10,822		10,822		6,977
Balance of Loans 90 days or More Past Due	18		18		2
Net Charge-Offs		(1)	(1)	3
Net Recoveries	0
Commercial construction loans | Commercial Portfolio Segment
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	5,281		5,281		4,657
Balance of Loans 90 days or More Past Due	1		1		0
Net Charge-Offs	0	0	0	0
Commercial leases | Commercial Portfolio Segment
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	3,495		3,495		3,600
Balance of Loans 90 days or More Past Due	1		1		0
Net Charge-Offs	4	0	7	0
Residential Mortgage | Residential Mortgage
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	17,812		17,812		16,041
Balance of Loans 90 days or More Past Due	48		48		38
Net Charge-Offs	1		1	6
Net Recoveries		2
Home Equity | Consumer Portfolio Segment
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	6,218		6,218		6,402
Balance of Loans 90 days or More Past Due	0		0		0
Net Charge-Offs	2	3	8	9
Indirect secured consumer loans | Consumer Portfolio Segment
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	11,026		11,026		8,976
Balance of Loans 90 days or More Past Due	10		10		12
Net Charge-Offs	13	9	34	28
Credit Card | Consumer Portfolio Segment
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	2,467		2,467		2,470
Balance of Loans 90 days or More Past Due	38		38		37
Net Charge-Offs	33	21	101	72
Other Consumer Loans | Consumer Portfolio Segment
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	2,657		2,657		2,342
Balance of Loans 90 days or More Past Due	1		1		0
Net Charge-Offs	17	$ 10	39	$ 27
Loans Held For Sale
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	1,223		1,223		607
Loans and Leases Managed and Securitized
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Balance	$ 109,409		$ 109,409		$ 95,265