|
Interest Income, Expense and Other Financing Costs (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| Interest Income, Expense and Other Financing Costs | ||
| Interest income | $ 1.2 | $ 1.6 |
| Interest expense and other financing costs | (8.5) | (6.0) |
| Interest expense and other financing costs, net | $ (7.3) | $ (4.4) |