Acquired Card Receivables - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Acquired Card Receivables [Abstract]
Acquired card receivable as collateral	$ 218.1
Authorized transactions but not cleared	$ 36.4
Grace period to payment on acquired card receivables	5 days
Acquired card receivables, minimum number of past due days to accrue fees	90 days
Card receivables acquired during the period	$ 4,100.0	$ 2,700.0
Gross charge-off amount, prior fiscal year	0.9
Gross charge-off amount, current fiscal year	$ 8.9