Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 112,689	$ 102,713	$ 214,849	$ 198,143
Other comprehensive income (loss):
Change in fair value of interest rate swaps	(41,302)	8,033	(65,295)	31,096
Total comprehensive income	71,387	110,746	149,554	229,239
Less: comprehensive income attributable to noncontrolling interests	5,842	7,934	12,082	16,190
Comprehensive income attributable to common stockholders	$ 65,545	$ 102,812	$ 137,472	$ 213,049