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9. Other Income and Expenses (Tables) | 6 Months Ended
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Jun. 30, 2016
Other Income and Expenses [Abstract] |
Schedule of other income (expense), net | Other (income) expense, net includes the following components (in millions):
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Interest and investment income | $ | (10.6 | ) |  | $ | (7.1 | ) |  | $ | (11.9 | ) |  | $ | (8.0 | )
Net realized gain on investments | (0.6 | ) |  | — |  |  | (0.5 | ) |  | (0.3 | )
Other (income) expense, net | $ | (11.2 | ) |  | $ | (7.1 | ) |  | $ | (12.4 | ) |  | $ | (8.3 | )

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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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