Condensed Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Non- controlling Interests
Beginning balance at Dec. 31, 2022	$ (15,848)	$ 5,061	$ 9,947	$ (50,814)	$ 29,473	$ (9,550)	$ 35
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(2,212)				(2,199)		(13)
Other comprehensive income (loss), net of tax	(158)					(158)
Share-based compensation	548		548
Treasury shares issued for stock options exercised, net	45		(27)	72
Treasury shares issued for other share-based plans, net	(19)		(82)	63
Treasury shares issued for 401(k) contribution	1,204		497	707
Subsidiary shares purchased from noncontrolling interests	(267)		(267)
Other changes in noncontrolling interests	(10)						(10)
Ending balance at Sep. 30, 2023	(16,717)	5,061	10,616	(49,972)	27,274	(9,708)	12
Beginning balance at Jun. 30, 2023	(15,493)	5,061	10,310	(50,181)	28,910	(9,617)	24
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,638)				(1,636)		(2)
Other comprehensive income (loss), net of tax	(91)					(91)
Share-based compensation	167		167
Treasury shares issued for stock options exercised, net	1		1
Treasury shares issued for other share-based plans, net	5		(9)	14
Treasury shares issued for 401(k) contribution	342		147	195
Other changes in noncontrolling interests	(10)						(10)
Ending balance at Sep. 30, 2023	(16,717)	5,061	10,616	(49,972)	27,274	(9,708)	12
Beginning balance at Dec. 31, 2023	(17,228)	5,061	10,309	(49,549)	27,251	(10,305)	5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(7,968)				(7,952)		(16)
Other comprehensive income (loss), net of tax	32					32
Share-based compensation	310		310
Treasury shares issued for other share-based plans, net	(24)		(129)	105
Treasury shares issued for 401(k) contribution	1,315		435	880
Other changes in noncontrolling interests	1						1
Ending balance at Sep. 30, 2024	(23,562)	5,061	10,925	(48,564)	19,299	(10,273)	(10)
Beginning balance at Jun. 30, 2024	(17,982)	5,061	10,727	(48,841)	25,469	(10,392)	(6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(6,174)				(6,170)		(4)
Other comprehensive income (loss), net of tax	119					119
Share-based compensation	102		102
Treasury shares issued for other share-based plans, net	11		(7)	18
Treasury shares issued for 401(k) contribution	362		103	259
Ending balance at Sep. 30, 2024	$ (23,562)	$ 5,061	$ 10,925	$ (48,564)	$ 19,299	$ (10,273)	$ (10)