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Restructuring - Charges Activities by Type of Cost (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs $ 127 $ 334
Separation Costs    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 26 229
Accelerated Depreciation    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 29 20
Other    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 72 85
Cost of sales    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 46 27
Cost of sales | Separation Costs    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 0 0
Cost of sales | Accelerated Depreciation    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 18 10
Cost of sales | Other    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 28 17
Selling, general and administrative    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 21 3
Selling, general and administrative | Separation Costs    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 0 0
Selling, general and administrative | Accelerated Depreciation    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 4 3
Selling, general and administrative | Other    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 17 0
Research and development    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 7 7
Research and development | Separation Costs    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 0 0
Research and development | Accelerated Depreciation    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 7 7
Research and development | Other    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 0 0
Restructuring costs    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 53 297
Restructuring costs | Separation Costs    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 26 229
Restructuring costs | Accelerated Depreciation    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs 0 0
Restructuring costs | Other    
Restructuring Cost and Reserve [Line Items]    
Total pretax restructuring costs $ 27 $ 68