Samsung Collaboration - Summarization of Collaboration Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Sales	$ 1,600	$ 1,613	$ 4,701	$ 4,919
Cost of sales	609	535	1,783	1,533
Selling, general and administrative	388	321	1,186	922
Receivables from Samsung included in Other current assets	1,498		1,498		$ 1,038
Payables to Samsung included in Trade accounts payable	1,673		1,673		259
Samsung Bioepis
Disaggregation of Revenue [Line Items]
Sales	139	99	305	227
Cost of sales	83	65	183	144
Selling, general and administrative	19	$ 25	50	$ 62
Receivables from Samsung included in Other current assets	12		12		52
Payables to Samsung included in Trade accounts payable	$ 36		$ 36		$ 13