Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue	$ 955,712	$ 776,027
Costs and expenses
Cost of revenue	542,419	462,857
Operations and support	133,782	187,235
Research and development	258,739	630,960
Sales and marketing	196,437	275,129
General and administrative	238,440	376,736
Total costs and expenses	1,369,817	1,932,917
Loss from operations	(414,105)	(1,156,890)
Interest income	21,327	19,654
Other income (expense), net	(3,665)	146
Loss before income taxes	(396,443)	(1,137,090)
Provision for income taxes	1,630	1,383
Net loss	$ (398,073)	$ (1,138,473)
Net loss per share, basic and diluted (in dollars per share)	$ (1.31)	$ (48.53)
Weighted-average number of shares outstanding used to compute net loss per share, basic and diluted (in shares)	304,502,000	23,459,000
Cost of revenue
Stock-based compensation included in costs and expenses:
Stock-based compensation expense	$ 9,724	$ 41,489
Operations and support
Stock-based compensation included in costs and expenses:
Stock-based compensation expense	4,133	51,404
Research and development
Stock-based compensation included in costs and expenses:
Stock-based compensation expense	95,548	506,206
Sales and marketing
Stock-based compensation included in costs and expenses:
Stock-based compensation expense	4,750	45,111
General and administrative
Stock-based compensation included in costs and expenses:
Stock-based compensation expense	$ 45,823	$ 215,276