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Investments in and Advances to Nonconsolidated Affiliates (Tables) | 6 Months Ended
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Jun. 30, 2018
Investments in and Advances to Affiliates, Schedule of Investments [Abstract] |
Schedule of Combined Results of Operations of Equity Method Affiliates | The following summarizes the combined results of operations of our equity method affiliates (on a 100% basis, in millions):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Net operating revenues | $ | 10.5 |  |  | $ | 10.4 |  |  | $ | 21.5 |  |  | $ | 21.2 |
Operating expenses | (5.6 | ) |  | (6.0 | ) |  | (13.2 | ) |  | (12.1 | )
Income from continuing operations, net of tax | 4.9 |  |  | 4.4 |  |  | 8.3 |  |  | 9.0 |
Net income | 4.9 |  |  | 4.4 |  |  | 8.3 |  |  | 9.0 |

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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