CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Millions	Total	COMMON STOCK	ADDITIONAL PAID-IN CAPITAL	ACCUMULATED OTHER COMPREHENSIVE LOSS	ACCUMULATED DEFICIT
Balance at beginning of period at Dec. 31, 2022		$ 1,002	$ 18,080	$ (1,099)	$ (7,609)
Increase (Decrease) in Stockholders' Equity
Net issuance of common stock through incentive and benefit plans		7
Other		(1)
Shares withheld to satisfy tax withholdings			(5)
Stock-based compensation			39
Other			3
Other comprehensive income (loss)	$ 42			42
Net loss	(8,303)				(8,303)
Balance at end of period at Sep. 30, 2023	2,156	1,008	18,117	(1,057)	(15,912)
Balance at beginning of period at Jun. 30, 2023		1,008	18,100	(1,053)	(15,834)
Increase (Decrease) in Stockholders' Equity
Net issuance of common stock through incentive and benefit plans		1
Other		(1)
Shares withheld to satisfy tax withholdings			(1)
Stock-based compensation			16
Other			2
Other comprehensive income (loss)	(4)			(4)
Net loss	(78)				(78)
Balance at end of period at Sep. 30, 2023	2,156	1,008	18,117	(1,057)	(15,912)
Balance at beginning of period at Dec. 31, 2023	417	1,008	18,126	(810)	(17,907)
Increase (Decrease) in Stockholders' Equity
Net issuance of common stock through incentive and benefit plans		7
Other		0
Shares withheld to satisfy tax withholdings			(5)
Stock-based compensation			21
Other			(2)
Other comprehensive income (loss)	44			44
Net loss	(140)				(140)
Balance at end of period at Sep. 30, 2024	342	1,015	18,140	(766)	(18,047)
Balance at beginning of period at Jun. 30, 2024		1,016	18,135	(786)	(17,899)
Increase (Decrease) in Stockholders' Equity
Net issuance of common stock through incentive and benefit plans		(1)
Other		0
Shares withheld to satisfy tax withholdings			(4)
Stock-based compensation			10
Other			(1)
Other comprehensive income (loss)	20			20
Net loss	(148)				(148)
Balance at end of period at Sep. 30, 2024	$ 342	$ 1,015	$ 18,140	$ (766)	$ (18,047)