CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN CONTINGENTLY REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ (DEFICIT) EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020	504
Beginning balance at Dec. 31, 2020	$ 5,244
Contingently Redeemable Convertible Preferred Stock
Capital stock issuance (in shares)	72
Capital stock issuance	$ 2,650
Ending balance (in shares) at Mar. 31, 2021	576
Ending balance at Mar. 31, 2021	$ 7,894
Beginning balance (in shares) at Dec. 31, 2020	101
Beginning balance at Dec. 31, 2020	$ (1,384)	$ 0	$ 302	$ (1,686)
Stockholders' (Deficit) Equity
Capital stock issuance	1		1
Net loss	$ (414)			(414)
Ending balance (in shares) at Mar. 31, 2021	101
Ending balance at Mar. 31, 2021	$ (1,797)	0	303	(2,100)
Beginning balance (in shares) at Dec. 31, 2021	0
Beginning balance at Dec. 31, 2021	$ 0
Ending balance (in shares) at Mar. 31, 2022	0
Ending balance at Mar. 31, 2022	$ 0
Beginning balance (in shares) at Dec. 31, 2021	900
Beginning balance at Dec. 31, 2021	$ 19,514	$ 1	25,887	(6,374)
Stockholders' (Deficit) Equity
Capital stock issuance (in shares)		1
Capital stock issuance	1		1
Stock-based compensation	338		338
Net loss	$ (1,593)			(1,593)
Ending balance (in shares) at Mar. 31, 2022	901
Ending balance at Mar. 31, 2022	$ 18,260	$ 1	$ 26,226	$ (7,967)