Derivative Instruments - Narrative (Details) - Not Designated as Hedging Instrument - USD ($) $ in Millions |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Successor | ||
| Derivative [Line Items] | ||
| Derivative asset, net | $ (5.0) | |
| Predecessor | ||
| Derivative [Line Items] | ||
| Derivative asset, net | $ 21.1 |