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Summary of Significant Accounting Policies $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) segment
Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | segment					1
Uninsured cash and cash equivalents	$ 3.8		$ 3.8		$ 22.9
Provision for credit losses	147.5	$ (30.5)	170.8	$ (9.2)
Restricted Cash and Cash Equivalents [Member]
Summary Of Significant Accounting Policies [Line Items]
Uninsured cash and cash equivalents	423.2		423.2		$ 407.9
New Consumer Loan Assignments [Member]
Summary Of Significant Accounting Policies [Line Items]
Provision for credit losses	97.5	91.6	200.1	223.4
Loans Receivable [Member]
Summary Of Significant Accounting Policies [Line Items]
Provision for credit losses	$ 0.0	$ 0.0	$ 0.0	$ 0.0

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Summary Of Significant Accounting Policies [Line Items]

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount of expense related to estimated loss from loan and lease transactions.

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