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, 2021		Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018
Assets
Other short-term investments	[1]	$ 34,572		$ 33,399
ALLL		(1,892)	[1]	(2,453)	[1]	$ (1,202)	$ (1,103)
Other assets	[1]	11,444		10,749
Total Assets		211,116		204,680
Liabilities
Other liabilities	[1]	4,267		3,409
Long-term debt	[1]	11,821		14,973
Total Liabilities		188,906		181,569
Variable Interest Entity, Primary Beneficiary | Automobile loan
Assets
Other short-term investments		24		55
Indirect secured consumer loans		322		756
ALLL		(2)		(7)
Other assets		2		5
Total Assets		346		809
Liabilities
Other liabilities		1		2
Long-term debt		263		656
Total Liabilities		$ 264		$ 658

[1] Includes $24 and $55 of other short-term investments, $322 and $756 of portfolio loans and leases, $(2) and $(7) of ALLL, $2 and $5 of other assets, $1 and $2 of other liabilities and $263 and $656 of long-term debt from consolidated VIEs that are included in their respective captions above at December 31, 2021 and 2020, respectively. For further information, refer to Note 12.