Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

v3.8.0.1
Income Taxes (Details) - USD ($)
3 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Sep. 30, 2018
Jan. 01, 2018
TaxRate [Line Items]        
FederalCorporateTaxRate 35.00%     21.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 24.50%   24.50%  
Accrued Income Taxes, Noncurrent $ 26.6      
Effective income tax rate (as a percent) 55.40% 23.40%    
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount $ 14,300,000      
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount 28,900,000      
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability $ 14,900,000