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
Issuance of common stock through incentive and benefit plans		6
Shares withheld to satisfy tax withholdings			(4)
Stock-based compensation			23
Other			1
Other comprehensive income	$ 46			46
Net (loss) income	(8,225)				(8,225)
Balance at end of period at Jun. 30, 2023	2,221	1,008	18,100	(1,053)	(15,834)
Balance at beginning of period at Mar. 31, 2023		1,005	18,094	(1,069)	(7,098)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock through incentive and benefit plans		3
Shares withheld to satisfy tax withholdings			0
Stock-based compensation			9
Other			(3)
Other comprehensive income	16			16
Net (loss) income	(8,736)				(8,736)
Balance at end of period at Jun. 30, 2023	2,221	1,008	18,100	(1,053)	(15,834)
Balance at beginning of period at Dec. 31, 2023	417	1,008	18,126	(810)	(17,907)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock through incentive and benefit plans		8
Shares withheld to satisfy tax withholdings			(1)
Stock-based compensation			11
Other			(1)
Other comprehensive income	24			24
Net (loss) income	8				8
Balance at end of period at Jun. 30, 2024	466	1,016	18,135	(786)	(17,899)
Balance at beginning of period at Mar. 31, 2024		1,016	18,137	(799)	(17,850)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock through incentive and benefit plans		0
Shares withheld to satisfy tax withholdings			0
Stock-based compensation			(3)
Other			1
Other comprehensive income	13			13
Net (loss) income	(49)				(49)
Balance at end of period at Jun. 30, 2024	$ 466	$ 1,016	$ 18,135	$ (786)	$ (17,899)