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Investments in Unconsolidated Entities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Equity method investments, combined income statements
Revenues	$ 1,720,964	$ 1,629,724	$ 3,450,785	$ 3,250,114
Operating expenses	1,276,758	1,204,588	2,563,479	2,334,226
Operating income	444,206	425,136	887,306	915,888
Other income, net	(10,451)	640	(5,623)	2,403
Net income	$ 433,755	$ 425,776	$ 881,683	$ 918,291

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The amount of the cost of sales reported by an equity method investment of the entity.

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