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Debt and Credit Facilities - Recent Activity (Details) - Subsequent Event - USD ($)
$ in Millions
1 Months Ended
Jul. 01, 2017
Jul. 31, 2017
Term Loan A Due July 2019    
Extinguishment of Debt [Line Items]    
Prepayment of term loan due July 2019 $ 96.3 $ 96.3
Term Loan A Facility due July 2017    
Extinguishment of Debt [Line Items]    
Repayment of term loan A due July 2017   $ 250.0