COMMON STOCK AND STOCKHOLDERS' EQUITY - Narrative (Details)			3 Months Ended		9 Months Ended
	Apr. 30, 2025 USD ($)	Feb. 26, 2025 USD ($) shares	Sep. 30, 2025 USD ($) vote class $ / shares shares	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) vote class $ / shares shares	Sep. 30, 2024 USD ($)	Dec. 31, 2024 shares	May 28, 2024 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, shares outstanding (in shares)			0		0		0
Number of classes of common stock | class			3		3
Payments for repurchases of common stock | $					$ 553,000,000	$ 97,000,000
Capitalized share-based compensation expense | $			$ 6,000,000	$ 7,000,000	17,000,000	$ 18,000,000
Unrecognized compensation cost | $			$ 341,000,000		$ 341,000,000
Unrecognized compensation cost related to outstanding stock options, weighted-average period					1 year 1 month 20 days
TradePMR Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock (in shares)			2,049,711		2,049,711		0
Market-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock (in shares)			11,065,463		11,065,463
2013, 2020 and 2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock authorized (in shares)			492,000,000		492,000,000
Shares issued under plans (in shares)					171,000,000
Common stock reserved for issuance (in shares)					14,000,000
2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares remaining available for issuance (in shares)			307,000,000		307,000,000
Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of voting rights per share | vote			1		1
Exercise price (in dollars per share) | $ / shares			$ 26.60		$ 26.60
Aggregate warrants exercisable (in shares)			9,090,000.00		9,090,000.00
Warrant exercised (in shares)			3,780,000		3,780,000
Warrant issued resulted from exercise (in shares)			2,530,000		2,530,000
Warrants outstanding | $			$ 242,000,000		$ 242,000,000
Shares repurchase, amount | $	$ 1,500,000,000							$ 1,000,000,000
Shares repurchase, increased amount | $	$ 500,000,000
Share repurchase program period	2 years
Repurchases of common stock (in shares)			1,000,000		11,000,000
Payments for repurchases of common stock | $			$ 107,000,000		$ 553,000,000
Common Class A | TradePMR
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of unvested shares issued (in shares)		2,049,711
Business combination, shares granted value | $		$ 100,000,000
Vesting period		4 years
Common Class B
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of voting rights per share | vote			10		10