Credit Quality (Summarizes the Bancorp's Recorded Investment in Impaired Loans and Related Allowance by Class) (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable with Related Allowance Unpaid Principal Balance	$ 917	$ 846
Impaired Financing Receivable with No Related Allowance Unpaid Principal Balance	718	536
Unpaid Principal Balance	1,635	1,382
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable, with Related Allowance, Recorded Investment	849	787
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	680	504
Recorded Investment	1,529	1,291
Allowance	170	141
Commercial Portfolio Segment \| Commercial and Industrial Loans
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable with Related Allowance Unpaid Principal Balance	277	156
Impaired Financing Receivable with No Related Allowance Unpaid Principal Balance	156	137
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable, with Related Allowance, Recorded Investment	215	107
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	142	125
Allowance	76	34
Commercial Portfolio Segment \| Commercial Mortgage Loans, Owner-Occupied
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable with Related Allowance Unpaid Principal Balance	4	2
Impaired Financing Receivable with No Related Allowance Unpaid Principal Balance	21	9
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable, with Related Allowance, Recorded Investment	4	2
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	21	9
Allowance		1
Commercial Portfolio Segment \| Commercial Mortgage Loans, Nonowner-Occupied
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable with Related Allowance Unpaid Principal Balance	1	2
Impaired Financing Receivable with No Related Allowance Unpaid Principal Balance	3	11
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable, with Related Allowance, Recorded Investment		1
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3	11
Commercial Portfolio Segment \| Commercial Leases
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable with Related Allowance Unpaid Principal Balance	26	23
Impaired Financing Receivable with No Related Allowance Unpaid Principal Balance	2
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable, with Related Allowance, Recorded Investment	26	22
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	2
Allowance	6	7
Residential Mortgage Loans
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable with Related Allowance Unpaid Principal Balance	431	465
Impaired Financing Receivable with No Related Allowance Unpaid Principal Balance	401	292
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable, with Related Allowance, Recorded Investment	429	462
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	385	274
Allowance	55	61
Consumer Portfolio Segment \| Home Equity
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable with Related Allowance Unpaid Principal Balance	127	146
Impaired Financing Receivable with No Related Allowance Unpaid Principal Balance	125	85
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable, with Related Allowance, Recorded Investment	127	145
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	119	83
Allowance	20	22
Consumer Portfolio Segment \| Indirect secured consumer loans
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable with Related Allowance Unpaid Principal Balance	4	5
Impaired Financing Receivable with No Related Allowance Unpaid Principal Balance	10	2
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable, with Related Allowance, Recorded Investment	4	4
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	8	2
Allowance		1
Consumer Portfolio Segment \| Credit Card
Impaired Financing Receivable Unpaid Principal Balance
Impaired Financing Receivable with Related Allowance Unpaid Principal Balance	47	47
Impaired Financing Receivable Recorded Investment Abstract
Impaired Financing Receivable, with Related Allowance, Recorded Investment	44	44
Allowance	$ 13	$ 15

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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