COMMON STOCK AND STOCKHOLDERS' (DEFICIT) EQUITY - Narrative (Details) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended
	Feb. 28, 2023 shares	Mar. 31, 2024 USD ($) class vote $ / shares shares	Mar. 31, 2023 USD ($)	Dec. 31, 2023 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, shares outstanding (in shares) | shares		0		0
Number of classes of common stock | class		3
Share-based compensation | $		$ 62	$ 598
Capitalized share-based compensation expense | $		5	4
Unrecognized compensation cost | $		$ 502
Unrecognized compensation cost related to outstanding stock options, weighted-average period		11 months 12 days
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation | $		$ 12	539
Market-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Canceled (in shares) | shares	35,500,000	6,109,059
Share-based compensation | $		$ (9)	528
Market-Based RSUs | General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation | $			$ 485
2013, 2020 and 2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock authorized (in shares) | shares		448,000,000
Shares issued under plans (in shares) | shares		137,000,000
Common stock reserved for issuance (in shares) | shares		72,000,000
2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares remaining available for issuance (in shares) | shares		239,000,000
Tranche 1 Convertible Note Holders
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum amount of all warrants | $		$ 380
Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of voting rights per share | vote		1
Common Class A | IPO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate warrants exercisable (in shares) | shares		14,300,000
Exercise price (in dollars per share) | $ / shares		$ 26.60
Common Class B
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of voting rights per share | vote		10