Equity and Accumulated Other Comprehensive Loss, Net (Schedule of Accumulated Other Comprehensive Income (Loss), Net) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at Beginning of Period	$ 5,132,297	$ 4,536,502
Balance at End of Period	11,049,450	5,132,297
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at Beginning of Period	(175,642)	(90,342)
Net current period change	28,272	(85,300)
Reclassification to interest expense from interest rate swaps	0	0
Balance at End of Period	(147,370)	(175,642)
Cash flow hedge adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at Beginning of Period	4,888	(6,248)
Net current period change	5,898	6,246
Reclassification to interest expense from interest rate swaps	2,414	4,890
Balance at End of Period	13,200	4,888
Foreign currency net investment hedge adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at Beginning of Period	35,149	0
Net current period change	(9,411)	35,149
Reclassification to interest expense from interest rate swaps	0	0
Balance at End of Period	25,738	35,149
Accumulated Other Comprehensive Income (Loss), net
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at Beginning of Period	(135,605)	(96,590)
Net current period change	24,759	(43,905)
Reclassification to interest expense from interest rate swaps	2,414	4,890
Balance at End of Period	$ (108,432)	$ (135,605)