Variable Interest Entities - Narrative (Details) - Variable Interest Entity, Not Primary Beneficiary - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Variable Interest Entity
Obligation to provide additional funding, amount	$ 0.0
Other Assets
Variable Interest Entity
Equity securities without readily determinable fair value, amount	0.5	$ 0.5
Asset Derivatives	1.5	1.5
Receivables and Other Assets \| Independent Dealership Financing \| Notes Receivable
Variable Interest Entity
Notes receivable, net of allowance	$ 0.4	$ 0.7

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
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- Definition

Amount of investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
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- Definition

Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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