Income Taxes - Reconciliation of the Beginning and Ending Amounts of the Bancorp's Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits at January 1	$ 102	$ 100	$ 65
Gross increases for tax positions taken during prior period	3	10	29
Gross decreases for tax positions taken during prior period	(5)	(4)	(3)
Gross increases for tax positions taken during current period	11	11	12
Settlements with taxing authorities	0	0	(1)
Lapse of applicable statute of limitations	(17)	(15)	(2)
Unrecognized tax benefits at December 31	$ 94	$ 102	100
Unrecognized tax benefits that would impact effective tax rate			$ 6