Equity - Stock-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Pre-tax compensation expense	$ 269	$ 219
Tax benefit	48	39
After-tax compensation expense	221	180
Cost of products sold
Share-based Compensation Arrangement by Share-based Payment Award
Pre-tax compensation expense	20	15
Research and development
Share-based Compensation Arrangement by Share-based Payment Award
Pre-tax compensation expense	87	92
Selling, general and administrative
Share-based Compensation Arrangement by Share-based Payment Award
Pre-tax compensation expense	$ 162	$ 112

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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