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Segments and Related Information - Narrative (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) segment | Jun. 30, 2021 USD ($)
Segment Reporting [Abstract] |  |  |  |
Number of operating segments | segment |  |  | 5 |
Number of reportable segments | segment |  |  | 5 |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |
Business combination, integration related costs | $ 12.5 |  | $ 26.1 |
Corporate |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |
Gain (loss) on investments | (2.2) | $ 1.0 | (7.1) | $ 1.0
2021 Acquisitions | Corporate |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |
Business combination, integration related costs | 3.0 |  | 6.8 |
Power Delivery | 2021 Acquisitions | Operating Segments |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |
Business combination, integration related costs | 7.0 |  | 14.1 |
Communications | 2021 Acquisitions | Operating Segments |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |
Business combination, integration related costs | 1.1 |  | 1.9 |
Oil and Gas | 2021 Acquisitions | Operating Segments |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |
Business combination, integration related costs | $ 1.4 |  | $ 3.3 |

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