XML 51 R41.htm IDEA: XBRL DOCUMENT
v3.10.0.1

REVENUES FROM CONTRACTS - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 29, 2018 | Sep. 29, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Revenue from External Customer [Line Items] |  |  |  |
Revenue, remaining performance obligation | $ 53.9 | $ 53.9 |  |
Increase (decrease) in contract with customers, net |  | 55.2 |  |
Contract with customer, revenue recognized | 6.8 | $ 56.7 |  |
Engineered Solutions segment | South African projects |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Customer contract terms |  | 10 years |  |
Minimum | HVAC segment |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Customer contract terms |  | 1 month |  |
Minimum | Detection and Measurement segment |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Customer contract terms |  | 1 month |  |
Minimum | Engineered Solutions segment | Power transformers |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Customer contract terms |  | 6 months |  |
Minimum | Engineered Solutions segment | Process cooling equipment and services, and heat exchangers |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Customer contract terms |  | 6 months |  |
Maximum | HVAC segment |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Customer contract terms |  | 3 months |  |
Maximum | Detection and Measurement segment |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Customer contract terms |  | 18 months |  |
Maximum | Engineered Solutions segment | Power transformers |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Customer contract terms |  | 1 year |  |
Maximum | Engineered Solutions segment | Process cooling equipment and services, and heat exchangers |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Customer contract terms |  | 1 year 6 months |  |
SOUTH AFRICA | Large Power Projects |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue recognized | $ 38.4 | $ 38.4 |  |
Scenario, Forecast |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenue remaining performance obligation percentage |  |  | 91.00% | 70.00%

X
- Definition Customer Contract Terms + References No definition available. + Details
Name: | spxc_CustomerContractTerms
Namespace Prefix: | spxc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase (Decrease) in Contract with Customers, Net + References No definition available. + Details
Name: | spxc_IncreaseDecreaseinContractwithCustomersNet
Namespace Prefix: | spxc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045 + Details
Name: | us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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
Name: | us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130556-203045 + Details
Name: | us-gaap_RevenueRemainingPerformanceObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage of remaining performance obligation to total remaining performance obligation not recognized as revenue. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130556-203045 + Details
Name: | us-gaap_RevenueRemainingPerformanceObligationPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of cost incurred on construction contract for unapproved change order, claim, or similar item subject to uncertainty. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 910 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6471471&loc=d3e48698-109348 + Details
Name: | us-gaap_UnapprovedChangeOrdersAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=spxc_EngineeredSolutionsReportableSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=spxc_SouthAfricanProjectsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=spxc_HVACReportableSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=spxc_DetectionandMeasurementReportableSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=spxc_PowerTransformersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=spxc_ProcessCoolingProjectsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_ZA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=spxc_LargePowerProjectsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |