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Supplemental Financial Statement Information - (Notes) | 9 Months Ended
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Sep. 30, 2020
Other Income and Expenses [Abstract] |
Supplemental Financial Statement Information | Supplemental Financial Statement Information Other income (expense), net for the three and nine months ended September 30, 2020 and 2019 was as follows:
(in millions) | Three months ended September 30, |  | Nine months ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Rent and royalty income | $ | 0.1 |  |  | $ | 1.4 |  |  | $ | 0.6 |  |  | $ | 2.8 |
Gains from disposal of property, plant and equipment, net | 0.8 |  |  | 62.3 |  |  | 3.3 |  |  | 90.6 |
Net equity loss on joint ventures (See Note 6) | (1.0) |  |  | (2.4) |  |  | (6.6) |  |  | (8.7) |
Joint venture restructuring charges (See Note 6) | — |  |  | — |  |  | (2.4) |  |  | — |
Net gain (loss) from sales of businesses | — |  |  | 5.8 |  |  | — |  |  | (1.9) |
Adjustment to indemnification for conditional ARO costs | — |  |  | — |  |  | 4.3 |  |  | — |
Other | (0.3) |  |  | 0.1 |  |  | — |  |  | 0.1 |
Total other income (expense), net | $ | (0.4) |  |  | $ | 67.2 |  |  | $ | (0.8) |  |  | $ | 82.9 |
Gains from disposal of property, plant and equipment, net for the nine months ended September 30, 2020 include a $2.5 million gain on the sale of certain oil and gas rights. Gains from disposal of property, plant and equipment, net for the three and nine months ended September 30, 2019 include a $62.4 million and $91.7 million gain on the sale of certain oil and gas rights, respectively. These cash gains are reported as investing activities on the consolidated statements of cash flows for the nine months ended September 30, 2020 and September 30, 2019, respectively, and are excluded from segment operating results. In the second quarter of 2020, the Company finalized a settlement agreement for an indemnity claim concerning a conditional asset retirement obligation (ARO) with the buyer of a formerly-owned business and as a result, the Company reduced ARO reserves by $4.3 million.

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