Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details)

v3.10.0.1
Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details) - USD ($)
$ in Millions
9 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Sep. 30, 2018
Jan. 01, 2018
Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
FederalCorporateTaxRate 35.00%     21.00% 35.00%
BlendedCorporateTaxRate 24.50%   24.50%    
Increase (Decrease) in Deferred Income Taxes $ 4.8 $ (30.3)