Net Loss per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net loss	$ (300,293)	$ (66,470)
Denominator:
Weighted-average number of shares outstanding, basic and diluted (in shares)	759,092	756,252
Net loss per share, basic and diluted (in dollars per share)	$ (0.40)	$ (0.09)