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v3.20.4

Restructuring - Charges Related to Restructuring Program Activities by Type of Cost (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | $ 883 | $ 927 | $ 658
Cost of sales |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 175 | 251 | 21
Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 47 | 34 | 3
Research and development |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 83 | 4 | 2
Restructuring costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 578 | 638 | 632
Separation Costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 385 | 572 | 473
Separation Costs | Cost of sales |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 0 | 0 | 0
Separation Costs | Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 0 | 0 | 0
Separation Costs | Research and development |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 0 | 0 | 0
Separation Costs | Restructuring costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 385 | 572 | 473
Accelerated Depreciation |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 268 | 233 | (1)
Accelerated Depreciation | Cost of sales |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 143 | 198 | 10
Accelerated Depreciation | Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 44 | 33 | 2
Accelerated Depreciation | Research and development |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 81 | 2 | (13)
Accelerated Depreciation | Restructuring costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 0 | 0 | 0
Other |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 230 | 122 | 186
Other | Cost of sales |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 32 | 53 | 11
Other | Selling, general and administrative |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 3 | 1 | 1
Other | Research and development |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | 2 | 2 | 15
Other | Restructuring costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring costs | $ 193 | $ 66 | $ 159

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