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Market Concentrations and Risks (Details) $ in Thousands, lb in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) lb Distributor Customer | Dec. 31, 2020 USD ($) Customer Distributor | Dec. 31, 2019 Customer Distributor
Concentration Risk [Line Items] |  |  |
Number of customers | Customer | 10 | 10 | 10
Number of distributors | Distributor | 7 | 7 | 7
Total senior subordinated notes | $ 1,477,060 | $ 1,590,810 |
Senior Subordinated Notes |  |  |
Concentration Risk [Line Items] |  |  |
Fair value of debt instrument | $ 1,509,200 | $ 1,633,700 |
Copper |  |  |
Concentration Risk [Line Items] |  |  |
Committed amounts to purchase (in pounds) | lb | 4.8 |  |
Committed amounts to purchase (in usd) | $ 20,900 |  |
Gain (loss) on unconditional purchase obligation | $ 300 |  |
Customer Concentration Risk | Consolidated Revenues | Continuing Operations |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 42.00% | 40.00% | 39.00%
Labor Force Concentration Risk | Workforce Subject to Collective Bargaining Arrangements |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 27.00% |  |
Labor Force Concentration Risk | Workforce Subject to Collective Bargaining Arrangements Expiring within One Year |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 18.00% |  |

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