v3.3.1.900
Income Taxes Tax Return Filing Determinations and Elections (Details) - USD ($)
$ in Millions
8 Months Ended 9 Months Ended 12 Months Ended
Aug. 19, 2009
Oct. 06, 2009
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Contingency [Line Items]          
Acquisition Date   Oct. 06, 2009      
Formation of LLP Aug. 19, 2009        
Income Tax Contingency, Federal Statutory Rate for Foreign Shareholders     30.00%    
Effective tax rate     17.00% 16.00% 16.00%
Internal Revenue Service (IRS) [Member] | IRS NOPA          
Income Tax Contingency [Line Items]          
Adjustment recorded     $ 0    
Minimum | IRS NOPA          
Income Tax Contingency [Line Items]          
Income Tax Contingency, Increased Future Effective Tax Rate     20.00%    
Maximum | IRS NOPA          
Income Tax Contingency [Line Items]          
Income Tax Contingency, Increased Future Effective Tax Rate     22.00%