Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation Accounting Policies (Details)

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Basis of Presentation Accounting Policies (Details) - Accounting Standards Update 2014-09 [Member] - USD ($)
$ in Millions
Nov. 30, 2018
Sep. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Cumulative Effect of New Accounting Principle in Period of Adoption $ 0.4  
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets   $ 0.1