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Restructuring and Related Impairment Charges - 2020 restructuring Plan (Details) - 2020 Restructuring Plan - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2020 | Dec. 31, 2020 | Jun. 30, 2020 | Dec. 31, 2020
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring and related impairment charges | $ 38,937 |  | $ 340,026 |
Cash Restructuring Charges |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected restructuring costs | 175,000 |  | 175,000 |
Facilities and Lease Terminations |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected restructuring costs | 55,000 |  | 55,000 |
Employee Related Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected restructuring costs | 25,000 |  | 25,000 |
Contract Termination And Other Restructuring |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected restructuring costs | 95,000 |  | 95,000 |
Non-Cash Charges |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected restructuring costs | 350,000 |  | 350,000 |
Long-Lived Asset Impairment |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected restructuring costs | 290,000 |  | 290,000 |
Intangible and Other Asset Impairment |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected restructuring costs | 60,000 |  | 60,000 |
Forecast |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring and related impairment charges |  | $ 184,787 |  | $ 524,813
Minimum |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected restructuring costs | 475,000 |  | 475,000 |
Maximum |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Expected restructuring costs | $ 525,000 |  | $ 525,000 |

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