Variable Interest Entities - Classifications of Consolidated VIE Assets, Liabilities and Noncontrolling Interest Included in the Bancorp's Consolidated Balance Sheets (Details) - USD ($) $ in Millions		Mar. 31, 2025		Dec. 31, 2024		Mar. 31, 2024	Dec. 31, 2023
Assets
Other short-term investments	[1]	$ 14,965		$ 17,120
ALLL		(2,384)	[1]	(2,352)	[1]	$ (2,318)	$ (2,322)
Other assets	[1]	12,347		12,857
Total Assets		212,669		212,927
Liabilities
Other liabilities	[1]	4,816		4,902
Long-term debt	[1]	14,539		14,337
Total Liabilities		192,266		193,282
Variable Interest Entity, Primary Beneficiary | Automobile And Solar Loan
Assets
Other short-term investments		47		51
Indirect secured consumer loans		843		967
Solar energy installation loans		31		33
ALLL		(16)		(19)
Other assets		6		5
Total Assets		911		1,037
Liabilities
Other liabilities		12		12
Long-term debt		774		889
Total Liabilities		$ 786		$ 901

[1] Includes $47 and $51 of other short-term investments, $874 and $1,000 of portfolio loans and leases, $(16) and $(19) of ALLL, $6 and $5 of other assets, $12 and $12 of other liabilities and $774 and $889 of long-term debt from consolidated VIEs that are included in their respective captions above at March 31, 2025 and December 31, 2024, respectively. For further information, refer to Note 7.