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v3.20.4

Separation and Other Termination Costs (Details) $ in Millions |  | 2 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 03, 2021 USD ($) employee | Mar. 01, 2021 USD ($) employee | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Separation and other termination costs |  |  | $ 44 | $ 12 | $ 38
Subsequent event |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Separation and other termination costs | $ 20 | $ 20 |  |  |
Number of employees terminated | employee | 220 | 220 |  |  |
Number of employees terminated, percent | 15.00% | 15.00% |  |  |
One-time termination benefits |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Separation and other termination costs |  |  | $ 44 | $ 12 | $ 38

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