Investments Cash Distributions from Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
Proceeds from Equity Method Investment, Cash Distributions	$ 111,509	$ 89,346

Proceeds from Equity Method Investment, Cash Distributions

No definition available.

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