Stock-Based Compensation and Equity (Details 4) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reconciliation Of Accumulated Comprehensive Income
Balance - beginning of period			$ 3,561,428	$ 3,890,735
Amounts reclassified from accumulated other comprehensive loss to:
Interest expense	$ 44,349	$ 49,683	139,496	145,325
Net current period other comprehensive loss	(14,924)	(35,849)	(48,001)	(84,625)
Balance - end of period	3,512,081	3,620,322	3,512,081	3,620,322
Accumulated Other Comprehensive Income (Loss)
Reconciliation Of Accumulated Comprehensive Income
Balance - beginning of period	(206,201)	(120,777)	(172,291)	(75,559)
Other comprehensive loss before reclassifications	(13,009)	(34,879)	(43,157)	(80,787)
Amounts reclassified from accumulated other comprehensive loss to:
Amount reclassified from accumulated other comprehensive income (loss)	(1,915)	(970)	(4,844)	(3,838)
Net current period other comprehensive loss	(14,924)	(35,849)	(48,001)	(84,625)
Net current period other comprehensive (gain) loss attributable to noncontrolling interests	(201)	(43)	(1,034)	3,515
Balance - end of period	(221,326)	(156,669)	(221,326)	(156,669)
Accumulated Other Comprehensive Income (Loss) | Amounts reclassified from accumulated other comprehensive loss to:
Amounts reclassified from accumulated other comprehensive loss to:
Interest expense	512	672	1,578	1,890
Other income and (expenses)	(2,427)	(1,642)	(6,422)	(5,728)
Gains and Losses on Derivative Instruments
Reconciliation Of Accumulated Comprehensive Income
Balance - beginning of period	34,744	30,796	37,650	13,597
Other comprehensive loss before reclassifications	(1,178)	2,259	(1,155)	22,326
Amounts reclassified from accumulated other comprehensive loss to:
Amount reclassified from accumulated other comprehensive income (loss)	(1,915)	(970)	(4,844)	(3,838)
Net current period other comprehensive loss	(3,093)	1,289	(5,999)	18,488
Net current period other comprehensive (gain) loss attributable to noncontrolling interests	17	0	17	0
Balance - end of period	31,668	32,085	31,668	32,085
Gains and Losses on Derivative Instruments | Amounts reclassified from accumulated other comprehensive loss to:
Amounts reclassified from accumulated other comprehensive loss to:
Interest expense	512	672	1,578	1,890
Other income and (expenses)	(2,427)	(1,642)	(6,422)	(5,728)
Foreign Currency Translation Adjustments
Reconciliation Of Accumulated Comprehensive Income
Balance - beginning of period	(240,985)	(151,608)	(209,977)	(89,177)
Other comprehensive loss before reclassifications	(11,824)	(37,138)	(41,999)	(103,127)
Amounts reclassified from accumulated other comprehensive loss to:
Amount reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Net current period other comprehensive loss	(11,824)	(37,138)	(41,999)	(103,127)
Net current period other comprehensive (gain) loss attributable to noncontrolling interests	(218)	(43)	(1,051)	3,515
Balance - end of period	(253,027)	(188,789)	(253,027)	(188,789)
Foreign Currency Translation Adjustments | Amounts reclassified from accumulated other comprehensive loss to:
Amounts reclassified from accumulated other comprehensive loss to:
Interest expense	0	0	0	0
Other income and (expenses)	0	0	0	0
Gains and Losses on Marketable Securities
Reconciliation Of Accumulated Comprehensive Income
Balance - beginning of period	40	35	36	21
Other comprehensive loss before reclassifications	(7)	0	(3)	14
Amounts reclassified from accumulated other comprehensive loss to:
Amount reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Net current period other comprehensive loss	(7)	0	(3)	14
Net current period other comprehensive (gain) loss attributable to noncontrolling interests	0	0	0	0
Balance - end of period	33	35	33	35
Gains and Losses on Marketable Securities | Amounts reclassified from accumulated other comprehensive loss to:
Amounts reclassified from accumulated other comprehensive loss to:
Interest expense	0	0	0	0
Other income and (expenses)	$ 0	$ 0	$ 0	$ 0