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Company Restructuring - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and related charges | $ 51 | $ 4 |
Employee costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Cumulative amount incurred to date for active programs | 220 |  |
Exit costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Cumulative amount incurred to date for active programs | 105 |  |
Transformative Growth Plan |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and related charges | 17 |  | $ 238
Restructuring and related charges approximately | 290 |  |
Future Work Environment |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and related charges | 33 |  |
Restructuring and related charges approximately | $ 110 |  |

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