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Equity Investments	6 Months Ended
Equity Investments	Jun. 30, 2018
Equity Method Investments and Joint Ventures [Abstract]
Equity Investments	Equity Investments Equity investments totaled $209.2 million and $253.9 million as of June 30, 2018 and December 31, 2017, respectively. We received distributions and dividends totaling $42.1 million and $41.0 million during the six months ended June 30, 2018 and 2017, respectively, primarily related to our LNS equity investment. During the second quarter of 2018, we made our second pro-rata concession funding payment to LNS of $74.3 million (€60.0 million) relating to extension of the concession for a period of up to nine years.