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Fair Value of Financial Instruments - Other Investments - Other Equity Investments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items] |  |  |
Equity method investments, net investment | $ 377.0 | $ 330.0 |
Subcontracting Arrangements | Related Party |  |  |
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items] |  |  |
Receivables, related party |  | 0.4 |
FM Tech |  |  |
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items] |  |  |
Equity method investments, net investment | 15.0 | 17.0 |
FM Tech | Equity Method Investments |  |  |
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items] |  |  |
Financing arrangement | 3.0 | 3.0 |
FM Tech | Maximum | Equity Method Investments |  |  |
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items] |  |  |
Financing arrangement | 7.0 |  |
Other Equity Method Investments |  |  |
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items] |  |  |
Equity method investments, equity contributions | 0.0 | 0.4 | $ 0.2
Equity method investments, distributions of earnings received, operating cash flows | 0.5 | 1.9 | 0.0
Telecommunications Equity Method Investees | Subcontracting Arrangements | Related Party |  |  |
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items] |  |  |
Payments, related party | 3.8 | 5.4 | 2.7
Payables, related party | 0.3 | 0.3 |
Telecommunications Equity Method Investees | Advanced Receivable Arrangement |  |  |
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items] |  |  |
Payments, related party | 0.0 |  |
Payments, net of rebates, related party |  | 0.1 | $ 0.7
Telecommunications Equity Method Investees | Employee Leasing and Advanced Receivable Arrangement | Related Party |  |  |
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items] |  |  |
Receivables, related party | $ 4.0 | $ 4.1 |

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