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Supplemental Financial Statement Information - Narrative (Details) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 USD ($) employee | Jun. 30, 2020 USD ($) employee | Mar. 31, 2020 employee | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring charges (credits) | $ (6.2) | $ 16.7 |  | $ (6.2) | $ 24.7 |
Number of positions with decreased severance-related reserve | employee | 200 |  |  |  |  |
Number of positions eliminated | employee |  | 550 | 90 |  |  |
Restructuring reserve | $ 26.3 |  |  | 26.3 |  | $ 43.4
Facility Idling |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring charges (credits) | 0.7 |  |  | 0.7 |  |
Employee Severance [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring charges (credits) | (6.9) |  |  | (6.9) |  |
Other Current Liabilities |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring reserve | 18.2 |  |  | 18.2 |  |
Other Noncurrent Liabilities |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring reserve | $ 8.1 |  |  | $ 8.1 |  |

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