Variable Interest Entities - Classifications of Consolidated VIE Assets, Liabilities and Noncontrolling Interest Included in the Bancorp's Consolidated Balance Sheets (Details) - USD ($) $ in Millions		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021	Dec. 31, 2020
Assets
Other short-term investments	[1]	$ 22,082		$ 8,351
ALLL		(2,322)	[1]	(2,194)	[1]	$ (1,892)	$ (2,453)
Other assets	[1]	12,538		13,459
Total Assets		214,574		207,452
Liabilities
Other liabilities	[1]	4,861		5,881
Long-term debt	[1]	16,380		13,714
Total Liabilities		195,402		190,125
Variable Interest Entity, Primary Beneficiary | Automobile And Solar Loan
Assets
Other short-term investments		55		17
Indirect secured consumer loans		1,535		141
Other consumer loans		38		44
ALLL		(28)		(2)
Other assets		10		2
Total Assets		1,610		202
Liabilities
Other liabilities		14		9
Long-term debt		1,409		118
Total Liabilities		$ 1,423		$ 127

[1] Includes $55 and $17 of other short-term investments, $1,573 and $185 of portfolio loans and leases, $(28) and $(2) of ALLL, $10 and $2 of other assets, $14 and $9 of other liabilities and $1,409 and $118 of long-term debt from consolidated VIEs that are included in their respective captions above at December 31, 2023 and 2022, respectively. For further information, refer to Note 12.