Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Consolidated net income	$ 122,569	$ 115,558	$ 178,039	$ 152,339
Comprehensive income, net of tax	122,569	115,558	178,039	152,339
Less: Comprehensive income attributable to noncontrolling interests, net of tax	33,871	47,321	49,769	63,366
Comprehensive income available to common stockholders	$ 88,698	$ 68,237	$ 128,270	$ 88,973