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Debt - 2015 Term Loan Facility (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Aug. 17, 2015
Dec. 31, 2015
Dec. 31, 2015
2015 Term Loan Facility      
Debt      
Debt term 6 years    
Aggregate principal amount of debt issued $ 350.0    
Maximum incremental loan capacity allowed $ 225.0    
Net carrying value of outstanding borrowings   $ 338.4 $ 338.4
Installment payment amount   $ 4.4  
Annual mandatory prepayment of debt as a percentage of excess cash flow   50.00% 50.00%
Percentage of equity interests in domestic subsidiaries pledged as collateral for borrowing (as a percent)     100.00%
Percentage of voting equity interests in direct foreign subsidiaries pledged as collateral for borrowing (as a percent)     65.00%
Percentage of non-voting equity interests in direct foreign subsidiaries pledged as collateral for borrowing (as a percent)     100.00%
2015 Term Loan Facility | London Interbank Offered Rate (LIBOR)      
Debt      
Margin rate     3.75%
Floor for variable rate     1.00%
Interest rate (as a percent)   4.75% 4.75%
Effective interest rate   5.65% 5.65%
2015 Term Loan Facility | Prime Rate      
Debt      
Margin rate     2.75%
Floor for variable rate     2.00%
2014 Term Loan Facility      
Debt      
Unamortized debt issuance costs   $ 6.8 $ 6.8
Term loan facility fees and expenses recorded in other income (expense)     $ 2.4