Related Party Transactions - Summary of the Bancorp's Activities with its Principal Shareholders, Directors and Executives (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Related Party Transactions
Outstanding balance on loans, net of participations and undrawn commitments	$ 117,439	$ 114,912
Related Party
Related Party Transactions
Outstanding balance on loans, net of participations and undrawn commitments	56	111
Commitments to Extend Credit
Related Party Transactions
Commitments	80,680	81,570
Commitments to Extend Credit | Directors and their affiliated companies
Related Party Transactions
Commitments	162	165
Commitments to Extend Credit | Executive officers
Related Party Transactions
Commitments	3	3
Commitments to Extend Credit | Related Party
Related Party Transactions
Commitments	$ 165	$ 168