Stock Compensation - Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation	$ 230	$ 224	$ 217
COR
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation	21	21	21
R&D
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation	67	68	66
SG&A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation	134	135	130
Restructuring charges/other
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation	$ 8	$ 0	$ 0