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Income Taxes Tax Return Filing Determinations and Elections (Details) - USD ($)
$ in Millions
6 Months Ended 8 Months Ended 9 Months Ended
Jun. 30, 2016
Aug. 19, 2009
Oct. 06, 2009
Income Tax Contingency [Line Items]      
Acquisition Date     Oct. 06, 2009
Formation of LLP   Aug. 19, 2009  
IRS NOPA | Internal Revenue Service (IRS)      
Income Tax Contingency [Line Items]      
Adjustment recorded $ 0