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Fair Value of Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2020
Fair Value Disclosures [Abstract] |
Schedule of Summarized Financial Information of Equity Method Investments | The following presents summarized information for the entities that comprise the Company’s significant equity method investments (in millions):
| December 31,
| 2020 |  | 2019
Current assets | $ | 160.3 |  |  | $ | 144.5 |
Long-term assets | 1,395.4 |  |  | 1,359.9 |
Total assets | $ | 1,555.7 |  |  | $ | 1,504.4 |
Current liabilities | $ | 56.0 |  |  | $ | 34.9 |
Long-term liabilities | 1,024.5 |  |  | 978.6 |
Total liabilities | $ | 1,080.5 |  |  | $ | 1,013.5 |
| For the Years Ended December 31,
| 2020 |  | 2019 |  | 2018
Revenue | $ | 169.2 |  |  | $ | 152.4 |  |  | $ | 145.8 |
Net income | $ | 94.7 |  |  | $ | 82.8 |  |  | $ | 72.4 |

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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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