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Employee Benefit Plans - Defined Benefit Pension Plans - Narrative (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Feb. 17, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Employee benefit plans |  |  |  |
Common stock held by defined benefit pension plans (in shares) |  | 0 | 0 |
SPX Postretirement Plans |  |  |  |
Employee benefit plans |  |  |  |
Transfer to insurance carrier for cash consideration | $ 10.0 |  |  |
Defined benefit plan, benefit obligation, loss on settlement |  |  |  | $ 0.7
Actuarial losses |  |  | $ 0.4 |
United States | Pension plans |  |  |  |
Employee benefit plans |  |  |  |
Accumulated benefit obligation |  | $ 226.1 | 245.7 |
Actuarial losses |  | $ 6.1 | $ (7.6) |

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- Definition Defined Benefit Plan, Benefit Obligation, Consideration Paid to Carrier + References No definition available. + Details
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- Definition Defined Benefit Plan, Benefit Obligation, Loss on Settlement + References No definition available. + Details
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- Definition Number of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 25 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480637/718-40-25-12 + Details
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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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