Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Accounts receivable, allowance for doubtful accounts | $ 1.6 | $ 3.5 |
| Property, plant and equipment, accumulated depreciation | $ 228.7 | $ 209.1 |