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Other Income, Net (Tables) | 6 Months Ended
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Jun. 30, 2017
Other Income and Expenses [Abstract] |
Other Income (Expense), Net | Other income (expense), net, consisted of the following for each period presented (in millions of dollars):
| Quarter Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Interest income | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 0.1 |
Realized gain on investments | 0.7 |  |  | 0.3 |  |  | 1.4 |  |  | 0.3 |
Loss on extinguishment of debt 1 | — |  |  | (11.1 | ) |  | — |  |  | (11.1 | )
All other income, net | 0.3 |  |  | 0.1 |  |  | 0.2 |  |  | 0.3 |
Other income (expense), net | $ | 1.0 |  |  | $ | (10.7 | ) |  | $ | 1.6 |  |  | $ | (10.4 | )
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1 | Represents the loss on extinguishment of our 8.25% Senior Notes during the quarter ended June 30, 2016, which included an $8.2 million premium paid to redeem the notes and a $2.9 million write-off of unamortized debt issuance costs associated with the notes.

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- Definition Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
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