Recently Issued and Adopted Accounting Standards (Details) - USD ($) $ in Millions	Sep. 30, 2020	Oct. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use asset	$ 11.9
Operating lease liability	$ 13.2
Operating lease, right-of-use asset, Balance Sheet location	us-gaap:OtherAssets
Operating lease liability, Balance Sheet location	us-gaap:OtherLiabilities
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use asset		$ 14.8
Operating lease liability		$ 16.0