Long-Term Debt - Summary of the Bancorp's Long-Term Borrowings (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021	May 05, 2020	Jan. 31, 2020	Oct. 28, 2019	Mar. 31, 2019	Jul. 26, 2018	Mar. 14, 2018	Mar. 15, 2016	Nov. 20, 2013
Debt Instrument
Long-term debt	[1]	$ 13,714	$ 11,821
Amount Qualifying as Tier Two Capital for Regulatory Capital Purposes
Debt Instrument
Long-term debt		1,900	2,500
Parent Company
Debt Instrument
Long-term debt		$ 9,331	7,927
Parent Company | Senior Notes | Fixed Rate 2.60% Notes Due 2022
Debt Instrument
Interest rate (as a percent)		2.60%
Long-term debt		$ 0	700
Parent Company | Senior Notes | Fixed Rate 3.50% Due 2022
Debt Instrument
Interest rate (as a percent)		3.50%
Long-term debt		$ 0	500
Parent Company | Senior Notes | Fixed Rate 1.625% Notes Due 2023
Debt Instrument
Interest rate (as a percent)		1.625%		1.625%
Long-term debt		$ 500	499
Parent Company | Senior Notes | Fixed Rate 3.65% Notes Due 2024
Debt Instrument
Interest rate (as a percent)		3.65%
Long-term debt		$ 1,498	1,496
Parent Company | Senior Notes | Fixed Rate 2.375% Notes Due 2025
Debt Instrument
Interest rate (as a percent)		2.375%				2.375%
Long-term debt		$ 748	748
Parent Company | Senior Notes | Fixed Rate 2.55% Notes Due 2027
Debt Instrument
Interest rate (as a percent)		2.55%		2.55%
Long-term debt		$ 747	746
Parent Company | Senior Notes | Fixed Rate/Floating Rate Notes Due 2027
Debt Instrument
Interest rate (as a percent)		1.707%
Long-term debt		$ 448	496
Parent Company | Senior Notes | Fixed Rate 3.95% Notes Due 2028
Debt Instrument
Interest rate (as a percent)		3.95%							3.95%
Long-term debt		$ 648	647
Parent Company | Senior Notes | Fixed Rate/Floating Rate 4.055 Percent Notes Due 2028
Debt Instrument
Interest rate (as a percent)		4.055%
Long-term debt		$ 381	0
Parent Company | Senior Notes | Fixed Rate/Floating Rate 6.361 Percent Notes Due 202
Debt Instrument
Interest rate (as a percent)		6.361%
Long-term debt		$ 1,012	0
Parent Company | Senior Notes | Fixed Rate/Floating Rate 4.772 Percent Notes Due 2030
Debt Instrument
Interest rate (as a percent)		4.772%
Long-term debt		$ 936	0
Parent Company | Senior Notes | Fixed Rate/Floating Rate 4.337 Percent Notes Due 2033
Debt Instrument
Interest rate (as a percent)		4.337%
Long-term debt		$ 556	0
Parent Company | Subordinated Debt | Fixed Rate 4.30% Notes Due 2024
Debt Instrument
Interest rate (as a percent)		4.30%									4.30%
Long-term debt		$ 749	749
Parent Company | Subordinated Debt | Fixed Rate 8.25% Notes Due 2038
Debt Instrument
Interest rate (as a percent)		8.25%
Long-term debt		$ 1,108	1,346
Subsidiaries
Debt Instrument
Long-term debt		4,383
Subsidiaries | FHLB Advances Due 2021 to 2047
Debt Instrument
Long-term debt		$ 21	44
Subsidiaries | FHLB Advances Due 2021 to 2047 | Weighted-Average
Debt Instrument
Interest rate (as a percent)		3.81%
Subsidiaries | Other Debt Due 2021 to 2041
Debt Instrument
Long-term debt		$ 302	284
Subsidiaries | Variable Interest Entity, Primary Beneficiary | Fixed-Rate Notes Due 2022 to 2026 | Automobile Loans
Debt Instrument
Long-term debt		$ 75	250
Subsidiaries | Variable Interest Entity, Primary Beneficiary | Fixed-Rate Notes Due 2022 to 2026 | Automobile Loans | Minimum
Debt Instrument
Interest rate (as a percent)		2.64%
Subsidiaries | Variable Interest Entity, Primary Beneficiary | Fixed-Rate Notes Due 2022 to 2026 | Automobile Loans | Maximum
Debt Instrument
Interest rate (as a percent)		2.69%
Subsidiaries | Variable Interest Entity, Primary Beneficiary | Fixed-Rate Notes Due 2022 to 2026 | Solar loan securitizations
Debt Instrument
Long-term debt		$ 39	0
Subsidiaries | Variable Interest Entity, Primary Beneficiary | Fixed-Rate Notes Due 2022 to 2026 | Solar loan securitizations | Minimum
Debt Instrument
Interest rate (as a percent)		4.05%
Subsidiaries | Variable Interest Entity, Primary Beneficiary | Fixed-Rate Notes Due 2022 to 2026 | Solar loan securitizations | Maximum
Debt Instrument
Interest rate (as a percent)		7.00%
Subsidiaries | Senior Notes | Floating Rate 0.772% Notes Due 2022
Debt Instrument
Interest rate (as a percent)		0.772%
Long-term debt		$ 0	300
Subsidiaries | Senior Notes | Fixed Rate 1.80% Senior Notes Due 2023
Debt Instrument
Interest rate (as a percent)		1.80%			1.80%
Long-term debt		$ 650	649
Subsidiaries | Senior Notes | Fixed Rate 3.95% Notes Due 2025
Debt Instrument
Interest rate (as a percent)		3.95%						3.95%
Long-term debt		$ 723	795
Subsidiaries | Senior Notes | Fixed Rate/Floating Rate 5.852 Percent Notes Due 2025
Debt Instrument
Interest rate (as a percent)		5.852%
Long-term debt		$ 999	0
Subsidiaries | Senior Notes | Fixed Rate 2.25% Notes Due 2027
Debt Instrument
Interest rate (as a percent)		2.25%			2.25%
Long-term debt		$ 599	598
Subsidiaries | Subordinated Debt | Fixed Rate 3.85% Notes Due 2026
Debt Instrument
Interest rate (as a percent)		3.85%								3.85%
Long-term debt		$ 749	748
Subsidiaries | Subordinated Debt | Fixed Rate 4.00% Notes Due 2027
Debt Instrument
Interest rate (as a percent)		4.00%					4.00%
Long-term debt		$ 173	172
Subsidiaries | Junior Subordinated Debt | Floating-Rate Debentures Due 2035
Debt Instrument
Long-term debt		$ 53	$ 54
Subsidiaries | Junior Subordinated Debt | Floating-Rate Debentures Due 2035 | Minimum
Debt Instrument
Interest rate (as a percent)		6.189%
Subsidiaries | Junior Subordinated Debt | Floating-Rate Debentures Due 2035 | Maximum
Debt Instrument
Interest rate (as a percent)		6.459%

[1] Includes $17 and $24 of other short-term investments, $185 and $322 of portfolio loans and leases, $(2) and $(2) of ALLL, $2 and $2 of other assets, $9 and $1 of other liabilities and $118 and $263 of long-term debt from consolidated VIEs that are included in their respective captions above at December 31, 2022 and 2021, respectively. For further information, refer to Note 12.