Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenue	$ 764	$ 668	$ 2,239	$ 1,794
Cost of revenue	203	183	569	540
Gross profit	561	485	1,670	1,254
Operating expenses:
Operations and support	145	57	273	187
Research and development	1,850	127	2,107	370
Sales and marketing	455	172	782	488
General and administrative	568	96	696	249
Total operating expenses	3,018	452	3,858	1,294
Income (loss) from operations	(2,457)	33	(2,188)	(40)
Other expense, net	(5)	(5)	(2)	(7)
Interest income	23	5	57	7
Income (loss) before benefit from income taxes	(2,439)	33	(2,133)	(40)
Benefit from income taxes	(440)	(3)	(376)	(2)
Net income (loss)	(1,999)	36	(1,757)	(38)
Undistributed earnings attributable to preferred stockholders	0	(36)	0	0
Net income (loss) attributable to common stockholders, basic	(1,999)	0	(1,757)	(38)
Net income (loss) attributable to common stockholders, diluted	$ (1,999)	$ 0	$ (1,757)	$ (38)
Net income (loss) per share attributable to common stockholders, basic (in dollars per share)	$ (20.86)	$ 0	$ (21.92)	$ (0.52)
Net income (loss) per share attributable to common stockholders, diluted (in dollars per share)	$ (20.86)	$ 0	$ (21.92)	$ (0.52)
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, basic (in shares)	95,836	72,010	80,180	71,783
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, diluted (in shares)	95,836	72,010	80,180	71,783