Selected Quarterly Financial Information (Unaudited) (Details 2) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2015 |
Jun. 30, 2015 |
Dec. 31, 2014 |
Jun. 30, 2014 |
Dec. 31, 2015 |
|
| Interim Period, Costs Not Allocable [Line Items] | |||||
| Turnaround costs | $ 7.0 | ||||
| Utility reimbursement credit | $ 3.4 | ||||
| Operating Expense | |||||
| Interim Period, Costs Not Allocable [Line Items] | |||||
| Turnaround costs | $ 6.6 | $ 0.4 | |||
| Cost of property repairs and maintenance | $ 0.5 | ||||
| Minimum | |||||
| Interim Period, Costs Not Allocable [Line Items] | |||||
| Period of shut-down | 17 days | ||||
| Property repairs and maintenance, period of shut down | 5 days | ||||
| Minimum | Linde, Inc. | |||||
| Interim Period, Costs Not Allocable [Line Items] | |||||
| Property repairs and maintenance, period of shut down | 16 days | ||||
| Maximum | |||||
| Interim Period, Costs Not Allocable [Line Items] | |||||
| Period of shut-down | 20 days | ||||
| Property repairs and maintenance, period of shut down | 7 days | ||||
| Maximum | Linde, Inc. | |||||
| Interim Period, Costs Not Allocable [Line Items] | |||||
| Property repairs and maintenance, period of shut down | 19 days | ||||