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9. Other Income and Expenses (Tables) | 9 Months Ended
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Sep. 30, 2019
Other Income and Expenses [Abstract] |
Schedule of other income (expense), net | Other (income) expense, net includes the following components (in millions):
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Interest and investment income | $ | (4.1 | ) |  | $ | (2.6 | ) |  | $ | (27.4 | ) |  | $ | (20.9 | )
Net realized (gain) loss on investments | (0.2 | ) |  | 0.1 |  |  | (0.2 | ) |  | 0.3 |
Other-than-temporary impairment loss on investment | — |  |  | — |  |  | 1.6 |  |  | — |
Gain on sale of land | — |  |  | — |  |  | — |  |  | (4.1 | )
Gain on divestiture of product line | — |  |  | — |  |  | — |  |  | (5.1 | )
Other (income) expense | (0.1 | ) |  | (0.1 | ) |  | (1.0 | ) |  | 0.2 |
Other (income) expense, net | $ | (4.4 | ) |  | $ | (2.6 | ) |  | $ | (27.0 | ) |  | $ | (29.6 | )

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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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