Variable Interest Entities - Classifications of Consolidated VIE Assets, Liabilities and Noncontrolling Interest Included in the Bancorp's Consolidated Balance Sheets (Details) - USD ($) $ in Millions		Jun. 30, 2024		Mar. 31, 2024	Dec. 31, 2023		Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Assets
Other short-term investments	[1]	$ 21,085			$ 22,082
ALLL		(2,288)	[1]	$ (2,318)	(2,322)	[1]	$ (2,327)	$ (2,215)	$ (2,194)
Other assets	[1]	12,938			12,538
Total Assets		213,262			214,574
Liabilities
Other liabilities	[1]	5,371			4,861
Long-term debt	[1]	16,293			16,380
Total Liabilities		194,036			195,402
Variable Interest Entity, Primary Beneficiary | Automobile And Solar Loan
Assets
Other short-term investments		52			55
Indirect secured consumer loans		1,237			1,535
Solar energy installation loans		35			38
ALLL		(23)			(28)
Other assets		7			10
Total Assets		1,308			1,610
Liabilities
Other liabilities		13			14
Long-term debt		1,136			1,409
Total Liabilities		$ 1,149			$ 1,423

[1] Includes $52 and $55 of other short-term investments, $1,272 and $1,573 of portfolio loans and leases, $(23) and $(28) of ALLL, $7 and $10 of other assets, $13 and $14 of other liabilities and $1,136 and $1,409 of long-term debt from consolidated VIEs that are included in their respective captions above at June 30, 2024 and December 31, 2023, respectively. For further information, refer to Note 11.