Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (47,978)	$ (86,926)	$ (129,620)	$ (195,678)
Other comprehensive income (loss), net of taxes:
Unrealized gain (loss) on available-for-sale securities	(23)	9	(23)	26
Change in derivative instruments designated and qualifying in cash flow hedges	(503)	(3,502)	(8,717)	(5,693)
Other comprehensive loss, net of taxes	(526)	(3,493)	(8,740)	(5,667)
Comprehensive loss	(48,504)	(90,419)	(138,360)	(201,345)
Less: comprehensive loss attributable to noncontrolling interests and redeemable noncontrolling interests	(5,968)	(8,355)	(19,870)	(14,235)
Comprehensive loss attributable to Class A and Class B stockholders	$ (42,536)	$ (82,064)	$ (118,490)	$ (187,110)