Recently Issued and Adopted Accounting Standards (Details) - USD ($) $ in Millions	Jun. 30, 2020	Oct. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease liability	$ 13.9
Other assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use asset	12.6
Other liabilities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease liability	$ 13.9
Accounting Standards Update 2016-02 | Other assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use asset		$ 14.8
Accounting Standards Update 2016-02 | Other liabilities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease liability		$ 16.0