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Commitments and Contingencies - Contingencies (Details) $ in Thousands |  |  | 1 Months Ended | 6 Months Ended | 9 Months Ended | 10 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 21, 2020 USD ($) | Aug. 06, 2019 USD ($) | Aug. 31, 2020 USD ($) | Jul. 31, 2020 USD ($) | Dec. 31, 2019 plaintiff | Oct. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) plaintiff | Mar. 31, 2019 lawsuit officer | Oct. 31, 2018 plaintiff | Oct. 31, 2015 USD ($) | Oct. 02, 2015 administrator | Dec. 31, 2020 USD ($) individual | Dec. 31, 2020 USD ($) | Feb. 02, 2017 joint_venture | Feb. 29, 2016
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of partially-owned joint ventures involved in possible sanctions law violations | joint_venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |
Strauch Fair Labor Standards Act Collective Action |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs | administrator |  |  |  |  |  |  |  |  |  |  |  | 4,000 |  |  |  |
Number of system administrators filed consents with court to participate in FLSA collective | administrator |  |  |  |  |  |  |  |  |  |  |  | 1,000 |  |  |  |
Number of individuals involved in collective action | individual |  |  |  |  |  |  |  |  |  |  |  |  | 800 |  |  |
Amount awarded to plaintiffs |  | $ 18,750 |  | $ 8,100 |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages sought |  |  |  |  |  |  | $ 14,100 |  |  |  |  |  |  |  |  |
Kemper Corporate Services, Inc. v. Computer Sciences Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for litigation settlement | $ 60,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount recovered from insurance carriers |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 12,500 |  |
In re DXC Technology Company Securities Litigation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuits filed | lawsuit |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |
Perspecta-related Disputes, Separation and Distribution Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages sought |  |  |  |  |  | $ 120,000 |  |  |  |  |  |  |  |  |  |
Perspecta-related Disputes, Separation and Distribution Agreement, Increase One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages sought |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000 |  |  |
Perspecta-related Disputes, Separation and Distribution Agreement, Increase Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages sought |  |  |  |  |  |  |  |  |  |  |  |  | 800,000 |  |  |
Perspecta-related Disputes, Separation and Distribution Agreement, Increase Three |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages sought |  |  |  |  |  |  |  |  |  |  |  |  | $ 990,000 |  |  |
Perspecta-related Disputes, IT Services Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages sought |  |  | $ 31,000 |  |  |  |  | $ 39,000 |  |  |  |  |  |  |  |
Settled litigation | Computer Sciences Corporation v. Eric Pulier et al. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, legal fees percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 80.00%
Settled litigation | Kemper Corporate Services, Inc. v. Computer Sciences Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages sought |  |  |  |  |  |  |  |  |  |  | $ 84,200 |  |  |  |  |
Settled litigation | Forsyth et al. v. HP Inc. and Hewlett Packard Enterprise |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs | plaintiff |  |  |  |  | 142 |  |  |  |  |  |  |  |  |  |  |
Pending litigation | Kemper Corporate Services, Inc. v. Computer Sciences Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, damages sought |  |  |  |  |  |  |  |  |  |  | $ 100,000 |  |  |  |  |
Pending litigation | Forsyth et al. v. HP Inc. and Hewlett Packard Enterprise |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs | plaintiff |  |  |  |  |  |  |  | 145 |  | 16 |  |  |  |  |  |
Officer | In re DXC Technology Company Securities Litigation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of defendants | officer |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |
Employees of Former Business Units of HPE | Settled litigation | Forsyth et al. v. HP Inc. and Hewlett Packard Enterprise |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs | plaintiff |  |  |  |  | 35 |  |  |  |  | 7 |  |  |  |  |  |

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