Debt (Details Textual) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |
|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2016 |
Dec. 31, 2015 |
|
| Debt discount | $ 6.0 | $ 6.0 | |
| Deferred Finance Costs, Net | $ 6.5 | $ 6.5 | |
| Long-term Debt, Weighted Average Interest Rate | 1.92% | 1.92% | |
| Line of Credit Facility, Remaining Borrowing Capacity | $ 779.4 | $ 779.4 | |
| Letter of Credit Subfacility, Maximum Borrowing Capacity | 756.8 | 756.8 | |
| Letters of Credit, Amount Outstanding | $ 352.5 | $ 352.5 | |
| Debt Instrument, Covenant Compliance | As of September 30, 2016, the Company is in compliance with the covenants under the Credit Agreement. | ||
| Trade receivables financing arrangement [Member] | |||
| Long-term Debt, Weighted Average Interest Rate | 1.39% | 1.39% | |
| Line of Credit Facility, Increase (Decrease) of Maximum Capacity for Period, Net | $ (15.0) | ||
| Trade receivables financing arrangement, maximum borrowing capacity | 80.0 | $ 80.0 | $ 95.0 |
| Trade receivables financing arrangement, outstanding borrowings | $ 76.6 | $ 76.6 |