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Market Concentrations and Risks (Details) lb in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) lb | Dec. 31, 2022 USD ($) | Dec. 31, 2021
Concentration Risk [Line Items] |  |  |
Senior subordinated notes | $ 1,215.0 | $ 1,174.1 |
Senior Subordinated Notes |  |  |
Concentration Risk [Line Items] |  |  |
Fair value of debt instrument | $ 1,141.8 | $ 1,046.3 |
Copper |  |  |
Concentration Risk [Line Items] |  |  |
Committed amounts to purchase (in pounds) | lb | 2.7 |  |
Committed amounts to purchase (in usd) | $ 10.5 |  |
Gain (loss) on unconditional purchase obligation | $ 0.1 |  |
Consolidated Revenues | Customer Concentration Risk | Ten Largest Customers |  |  |
Concentration Risk [Line Items] |  |  |
Percent of total revenues | 44.00% | 45.00% | 44.00%
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk |  |  |
Concentration Risk [Line Items] |  |  |
Percent of total revenues | 27.00% |  |

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