Recently Issued and Adopted Accounting Standards (Details) - USD ($) $ in Millions	Mar. 31, 2020	Oct. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease liability	$ 14.6
Other assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use asset	13.4
Other liabilities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease liability	$ 14.6
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