Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 102,160	$ 95,430
Other comprehensive income/(loss):
Change in fair value of interest rate swaps	(23,993)	23,063
Total comprehensive income	78,167	118,493
Less: comprehensive income attributable to noncontrolling interests	6,240	8,256
Comprehensive income attributable to common stockholders	$ 71,927	$ 110,237