Variable Interest Entities - Classifications of Consolidated VIE Assets, Liabilities and Noncontrolling Interest Included in the Bancorp's Consolidated Balance Sheets (Details) - USD ($) $ in Millions		Sep. 30, 2023		Aug. 31, 2023	Jun. 30, 2023	Dec. 31, 2022		Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Assets
Other short-term investments	[1]	$ 18,923				$ 8,351
ALLL		(2,340)	[1]		$ (2,327)	(2,194)	[1]	$ (2,099)	$ (2,014)	$ (1,892)
Other assets	[1]	13,818				13,459
Total Assets		212,967				207,452
Liabilities
Other liabilities	[1]	5,808				5,881
Long-term debt	[1]	16,310				13,714
Total Liabilities		196,423				190,125
Secured Debt
Liabilities
Long-term debt				$ 1,500
Variable Interest Entity, Primary Beneficiary | Automobile And Solar Loan
Assets
Other short-term investments		59				17
Indirect secured consumer loans		1,689				141
Other consumer loans		39				44
ALLL		(27)				(2)
Other assets		11				2
Total Assets		1,771				202
Liabilities
Other liabilities		15				9
Long-term debt		1,553				118
Total Liabilities		$ 1,568				$ 127

[1] Includes $59 and $17 of other short-term investments, $1,728 and $185 of portfolio loans and leases, $(27) and $(2) of ALLL, $11 and $2 of other assets, $15 and $9 of other liabilities, and $1,553 and $118 of long-term debt from consolidated VIEs that are included in their respective captions above at September 30, 2023 and December 31, 2022, respectively. For further information, refer to Note 12.