Subsequent Event	3 Months Ended
	Mar. 31, 2022
Subsequent Events [Abstract]
Subsequent Event	Subsequent EventOn April 25, 2022, the Bancorp issued and sold $1 billion of fixed-rate/floating-rate senior notes. $400 million of the notes will bear interest at a rate of 4.055% per annum to, but excluding, April 25, 2027, followed by an interest rate of compounded SOFR plus 1.355% until maturity on April 25, 2028. The remaining $600 million of the notes will bear interest at a rate of 4.337% per annum to, but excluding, April 25, 2032, followed by an interest rate of compounded SOFR plus 1.660% until maturity on April 25, 2033. The Bancorp entered into interest rate swaps to convert the fixed-rate periods of the notes to floating-rate, resulting in effective rates of 1.907% and 2.211% for the notes due April 25, 2028 and the notes due April 25, 2033, respectively. Each tranche of notes is redeemable in whole at par plus accrued and unpaid interest one year prior to its maturity date, or may be wholly or partially redeemed 30 days or 90 days prior to maturity for the 2028 notes and the 2033 notes, respectively.