CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Comprehensive income
Net income	$ 204,160	$ 228,400	$ 354,101	$ 3,960,231
Other comprehensive income (loss) – derivative instruments:
Unrealized holding gains (losses) arising during the period	3,507	(1,561)	3,507	(4,467)
Losses reclassified into earnings from other comprehensive income	4,668	4,268	9,251	32,922
Other comprehensive income (loss) – foreign currency:
Currency translation adjustments arising during the period		(25)		50
Other comprehensive income	8,175	2,682	12,758	28,505
Comprehensive income	212,335	231,082	366,859	3,988,736
Comprehensive (income) attributable to Noncontrolling Interests	(8,416)	(9,664)	(14,782)	(154,734)
Comprehensive income attributable to controlling interests	$ 203,919	$ 221,418	$ 352,077	$ 3,834,002