Segments - Information on Segments and Reconciliation to Earnings Before Income Taxes from Continuing Operations (Footnote) (Details) - USD ($) $ in Millions |
Dec. 31, 2018 |
Dec. 31, 2017 |
|---|---|---|
| Manufacturing | Operating Segments | ||
| Segment Reporting Information [Line Items] | ||
| Inventory, including raw materials and work-in-process | $ 15.2 | $ 16.3 |