Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Millions	1 Months Ended		12 Months Ended
	Dec. 31, 2018	Apr. 30, 2018 USD ($) shares	Feb. 02, 2020 USD ($) class $ / shares shares	Oct. 31, 2019 $ / shares	Aug. 31, 2019 USD ($)	Jan. 31, 2019 $ / shares shares	Apr. 04, 2018 $ / shares
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)			20,000,000			20,000,000
Preferred stock, shares issued (in shares)			0			0
Preferred stock, shares outstanding (in shares)			0			0
Number of classes of stock | class			2
Common stock, shares authorized (in shares)			2,250,000,000			2,250,000,000
Class A common stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)			2,000,000,000			2,000,000,000
Common stock, par value per share (in dollars per share) | $ / shares			$ 0.0001			$ 0.0001
Common stock, shares issued (in shares)			264,008,206			243,524,000
Common stock, shares outstanding (in shares)			264,008,000			243,524,000
Value approved for repurchase | $					$ 150.0
Stock repurchased and retired (in shares)		1,008,573	867,657
Stock repurchased and retired, average cost (in dollars per share) | $ / shares			$ 17.29
Stock repurchased and retired, value | $		$ 20.0	$ 15.0
Remaining authorized reourchase amount | $			$ 135.0
Closing price of stock (in dollars per share) | $ / shares			$ 17.80	$ 17.80			$ 19.83
Class B common stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)			250,000,000			250,000,000
Common stock, par value per share (in dollars per share) | $ / shares			$ 0.0001			$ 0.0001
Convertible Stock, Automatic Conversion, Portion Of Outstanding Stock, Percentage	10.00%