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, 2021	$ (14,846)	$ 5,061	$ 9,052	$ (51,861)	$ 34,408	$ (11,659)	$ 153
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(4,390)				(4,301)		(89)
Other comprehensive income (loss), net of tax	141					141
Share-based compensation	528		528
Treasury shares issued for stock options exercised, net	39		(25)	64
Treasury shares issued for other share-based plans, net	(35)		(75)	40
Treasury shares issued for 401(k) contribution	928		225	703
Ending balance at Sep. 30, 2022	(17,635)	5,061	9,705	(51,054)	30,107	(11,518)	64
Beginning balance at Jun. 30, 2022	(14,791)	5,061	9,475	(51,319)	33,382	(11,487)	97
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(3,308)				(3,275)		(33)
Other comprehensive income (loss), net of tax	(31)					(31)
Share-based compensation	176		176
Treasury shares issued for stock options exercised, net	4		(4)	8
Treasury shares issued for other share-based plans, net	(1)		(3)	2
Treasury shares issued for 401(k) contribution	316		61	255
Ending balance at Sep. 30, 2022	(17,635)	5,061	9,705	(51,054)	30,107	(11,518)	64
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