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v3.20.4

Summary of Significant Accounting Policies Goodwill and Intangible Assets (Details) | 12 Months Ended
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Dec. 31, 2020
Long term supply contracts |
Acquired Finite-Lived Intangible Assets [Line Items] |
Finite-lived intangible asset, useful life (in years) | 15 years
Patents |
Acquired Finite-Lived Intangible Assets [Line Items] |
Finite-lived intangible asset, useful life (in years) | 8 years
Minimum | Customer relationships |
Acquired Finite-Lived Intangible Assets [Line Items] |
Finite-lived intangible asset, useful life (in years) | 11 years
Minimum | Trade names |
Acquired Finite-Lived Intangible Assets [Line Items] |
Finite-lived intangible asset, useful life (in years) | 8 years
Minimum | Technology |
Acquired Finite-Lived Intangible Assets [Line Items] |
Finite-lived intangible asset, useful life (in years) | 6 years
Maximum | Customer relationships |
Acquired Finite-Lived Intangible Assets [Line Items] |
Finite-lived intangible asset, useful life (in years) | 18 years
Maximum | Trade names |
Acquired Finite-Lived Intangible Assets [Line Items] |
Finite-lived intangible asset, useful life (in years) | 27 years
Maximum | Technology |
Acquired Finite-Lived Intangible Assets [Line Items] |
Finite-lived intangible asset, useful life (in years) | 8 years

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