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Supplemental Financial Statement Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Additional Financial Information Disclosure [Abstract] |
Schedule of cash and cash equivalents | Cash and cash equivalents at December 31, 2018 and 2017 were as follows:
(In millions) |  | 2018 |  | 2017
Cash |  | $ | 264.4 |  |  | $ | 140.2 |
Other short-term investments |  | 117.6 |  |  | 1.4 |
Total cash and cash equivalents |  | $ | 382.0 |  |  | $ | 141.6 |
Schedule of other non-operating income (expense) | Other income (expense) for the years ended December 31, 2018, 2017, and 2016 was as follows:
(In millions) |  | 2018 |  | 2017 |  | 2016
Rent and royalty income |  | $ | 3.1 |  |  | $ | 3.5 |  |  | $ | 1.4 |
Net gains on property and investments |  | 1.3 |  |  | 0.5 |  |  | 1.0 |
Net equity loss on joint ventures (See Note 6) |  | (1.0 | ) |  | — |  |  | — |
Gain on joint venture deconsolidation (See Note 6) |  | 15.9 |  |  | — |  |  | — |
Other |  | 1.2 |  |  | — |  |  | — |
Total other income, net |  | $ | 20.5 |  |  | $ | 4.0 |  |  | $ | 2.4 |

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