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Income Taxes - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Sep. 30, 2019
Operating Loss Carryforwards [Line Items]      
Unrecognized Tax Benefits, Increase resulting from current period tax positions   $ 4.5  
Unrecognized Tax Benefits, Increase in liability resulting from prior year $ 2.2   $ 2.2
Unrecognized Tax Benefits, Decrease resulting from settlements with taxing authorities $ 4.5    
Minimum      
Operating Loss Carryforwards [Line Items]      
Open Tax Year     2016
New York State Division of Taxation and Finance | Minimum      
Operating Loss Carryforwards [Line Items]      
Income Tax Examination, Year under Examination     2014