Basis of Presentation and Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2020	Jan. 01, 2020
Cumulative Effect, Period of Adoption, Adjustment
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Cumulative effect adjustment to reduce retained earnings		$ 0.5
Forecast
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Subrogation benefit related to claims	$ 4.8
Increase (decrease) in prepaid reinsurance premiums	3.5
Reinsurance recoverables	$ 8.3

Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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+ Details