XML 59 R47.htm IDEA: XBRL DOCUMENT v3.6.0.2
SIGNIFICANT ACCOUNTING POLICIES - Income Taxes (Details) - USD ($)
$ in Millions
1 Months Ended
Apr. 30, 2016
Dec. 31, 2016
Dec. 31, 2015
Income Taxes [Line Items]      
Refund of 2015 income tax payments $ 35.0    
Affiliated Entity      
Income Taxes [Line Items]      
Receivables     $ 34.2
Federal      
Income Taxes [Line Items]      
Income taxes payable   $ 1.4  
State      
Income Taxes [Line Items]      
Income taxes payable   $ 1.7 $ 1.1