Acquired Card Receivables - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022
Financing Receivable, Past Due [Line Items]
Acquired card receivable as collateral	$ 131.8
Authorized transactions but not cleared	$ 55.9
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	$ 2,700.0	$ 1,200.0
Gross charge-off amount, prior fiscal year	4.6
Gross charge-off amount, current fiscal year	0.4
Prepaid Expenses and Other Current Assets
Financing Receivable, Past Due [Line Items]
Card receivables held for sale, amount	$ 0.0		$ 8.7