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Commitments and Contingencies - Additional Information (Details) | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Aug. 31, 2017 PRP | Mar. 31, 2016 USD ($) mi | Dec. 31, 2020 USD ($) entity mi | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |
Accrual for environmental loss contingencies |  |  | $ 2,400,000 | $ 2,500,000 | $ 2,700,000 | $ 2,800,000
Aggregate environmental accruals included in current other accrued liabilities |  |  | 500,000 | 600,000 |  |
Amount which is better estimate within range |  |  | 0 | 0 |  |
Remediation accrual balance if accrued at high end of the range of possible outcomes |  |  | $ 16,000,000 | 16,000,000 |  |
Lower Passaic River |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of entities, in addition to Hexcel, who received a directive from the New Jersey Department of Environmental Protection | entity |  |  | 48 |  |  |
Length of river to perform a Remedial Investigation/Feasibility Study (“RI/FS”) of environmental conditions | mi |  |  | 17 |  |  |
Number of identified non governmental potentially responsible parties | PRP | 120 |  |  |  |  |
Accrual for environmental loss contingencies |  |  | $ 2,100,000 | $ 2,100,000 |  |
Lower Passaic River | Minimum |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Portion of the river for which Record of Decision setting forth the EPA's selected remedy (in miles) | mi |  | 8 |  |  |  |
Expected cost of capping and dredging of the lower eight miles of the river by EPA |  | $ 970,000,000 |  |  |  |
Lower Passaic River | Maximum |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Portion of the river for which Record of Decision setting forth the EPA's selected remedy (in miles) | mi |  | 9 |  |  |  |
Expected cost of capping and dredging of the lower eight miles of the river by EPA |  | $ 2,070,000,000.00 |  |  |  |

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