Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Additional Information [Abstract]
Research and development expense	$ 617	$ 495	$ 465
Advertising expense	807	637	730
Foreign currency net transaction (gains)/losses	45	90	(95)
Interest expense	737	728	796
Interest income	(109)	(110)	(226)
Interest expense, net	$ 628	$ 618	$ 570