XML 15 R77.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Information on Reportable and Other Operating Segments (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 USD ($) country | Sep. 28, 2019 USD ($) | Jun. 29, 2019 USD ($) | Mar. 30, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 29, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Jul. 01, 2017 USD ($) | Dec. 31, 2019 USD ($) segment country | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Business segment |  |  |  |  |  |  |  |  |  |  |  |  |
Number of countries in which entity operates | country | 17 |  |  |  |  |  |  |  |  |  | 17 |  |
Number of countries in which entity sells its products and services | country | 100 |  |  |  |  |  |  |  |  |  | 100 |  |
Number of reportable segments | segment |  |  |  |  |  |  |  |  |  |  | 3 |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 444,600,000 | $ 364,800,000 | $ 372,400,000 | $ 343,600,000 | $ 445,000,000.0 | $ 362,500,000 | $ 379,200,000 | $ 351,900,000 |  |  | $ 1,525,400,000 | $ 1,538,600,000 | $ 1,425,800,000
Income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  |  |  | 107,900,000 | 107,600,000 | 59,900,000
Pension and postretirement expense |  |  |  |  |  |  |  |  |  |  | 20,200,000 | 13,700,000 | 14,900,000
Special charges, net |  |  |  |  |  |  |  |  |  |  | 4,000,000.0 | 6,300,000 | 2,700,000
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  |  | 17,800,000 | 12,400,000 | 11,000,000.0
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 34,500,000 | 29,200,000 | 25,200,000
Identifiable assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Total identifiable assets | 2,134,500,000 |  |  |  | 2,057,500,000 |  |  |  | $ 2,040,400,000 |  | 2,134,500,000 | 2,057,500,000 | 2,040,400,000
Tangible Long-Lived Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Total tangible long-lived assets | 801,400,000 |  |  |  | 866,300,000 |  |  |  | 944,400,000 |  | 801,400,000 | 866,300,000 | 944,400,000
Gain on contract settlement |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 10,200,000
United States |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | 1,380,600,000 | 1,317,500,000 | 1,243,300,000
Tangible Long-Lived Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Total tangible long-lived assets | 754,700,000 |  |  |  | 837,400,000 |  |  |  | 919,600,000 |  | 754,700,000 | 837,400,000 | 919,600,000
China |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | 31,100,000 | 38,500,000 | 28,000,000.0
South Africa |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | (6,100,000) | 72,700,000 | 56,900,000
United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | 59,000,000.0 | 62,400,000 | 60,800,000
Other |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | 60,800,000 | 47,500,000 | 36,800,000
Tangible Long-Lived Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Total tangible long-lived assets | 46,700,000 |  |  |  | 28,900,000 |  |  |  | 24,800,000 |  | 46,700,000 | 28,900,000 | 24,800,000
Reportable and other operating segments |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  |  |  | 174,000,000.0 | 178,500,000 | 124,900,000
General corporate |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate expense |  |  |  |  |  |  |  |  |  |  | 46,700,000 | 48,500,000 | 46,200,000
Special charges, net |  |  |  |  |  |  |  |  |  |  | 200,000 | 500,000 | 100,000
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  |  | 2,500,000 | 800,000 | 1,900,000
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 3,000,000.0 | 3,000,000.0 | 3,100,000
Identifiable assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Total identifiable assets | 220,300,000 |  |  |  | 295,400,000 |  |  |  | 457,700,000 |  | 220,300,000 | 295,400,000 | 457,700,000
Segment reconciling items |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |
Pension and postretirement expense |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 300,000
Long-term incentive compensation expense |  |  |  |  |  |  |  |  |  |  | 13,600,000 | 15,500,000 | 15,800,000
Special charges, net |  |  |  |  |  |  |  |  |  |  | 4,000,000.0 | 6,300,000 | 2,700,000
Other operating expenses |  |  |  |  |  |  |  |  |  |  | 1,800,000 | 0 | 0
Loss on sale of dry cooling business |  |  |  |  |  |  |  |  |  |  | 0 | 600,000 | 0
HVAC reportable segment |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | 593,200,000 | 582,100,000 | 511,000,000.0
HVAC reportable segment | Reportable and other operating segments |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  |  |  | 95,400,000 | 90,000,000.0 | 74,100,000
Special charges, net |  |  |  |  |  |  |  |  |  |  | 800,000 | 800,000 | 400,000
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  |  | 5,900,000 | 2,700,000 | 2,200,000
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 6,900,000 | 5,400,000 | 5,500,000
Identifiable assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Total identifiable assets | 852,000,000.0 |  |  |  | 778,500,000 |  |  |  | 747,100,000 |  | 852,000,000.0 | 778,500,000 | 747,100,000
Detection and Measurement reportable segment |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | 384,900,000 | 320,900,000 | 260,300,000
Detection and Measurement reportable segment | Reportable and other operating segments |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  |  |  | 81,700,000 | 72,400,000 | 63,400,000
Special charges, net |  |  |  |  |  |  |  |  |  |  |  |  | 300,000
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  |  | 2,300,000 | 1,900,000 | 800,000
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 13,200,000 | 8,400,000 | 4,100,000
Identifiable assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Total identifiable assets | 609,400,000 |  |  |  | 479,000,000.0 |  |  |  | 277,800,000 |  | 609,400,000 | 479,000,000.0 | 277,800,000
Engineered Solutions reportable segment |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | 548,900,000 | 537,000,000.0 | 560,700,000
Tangible Long-Lived Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from contract termination |  |  |  |  |  |  |  |  |  |  |  |  | 9,000,000.0
Gain on contract settlement |  |  |  |  |  |  |  |  |  |  |  |  | 10,200,000
Engineered Solutions reportable segment | Reportable and other operating segments |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  |  |  | 43,000,000.0 | 35,000,000.0 | 44,200,000
Special charges, net |  |  |  |  |  |  |  |  |  |  | 800,000 |  | 400,000
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  |  | 7,000,000.0 | 6,900,000 | 5,800,000
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 10,700,000 | 10,600,000 | 10,400,000
Identifiable assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Total identifiable assets | 392,900,000 |  |  |  | 422,400,000 |  |  |  | 466,200,000 |  | 392,900,000 | 422,400,000 | 466,200,000
All Other |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | (1,600,000) | 98,600,000 | 93,800,000
Income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |
Special charges, net |  |  |  |  |  |  |  |  |  |  | 2,200,000 | 5,000,000.0 | 1,500,000
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  |  | 100,000 | 100,000 | 300,000
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |  |  |
Total depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 700,000 | 1,800,000 | 2,100,000
Identifiable assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Total identifiable assets | $ 59,900,000 |  |  |  | $ 82,200,000 |  |  |  | 91,600,000 |  | 59,900,000 | 82,200,000 | 91,600,000
All Other | Reportable and other operating segments |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  |  |  | (46,100,000) | (18,900,000) | (56,800,000)
Large Power Projects | Revisions in estimates for large power projects | Reportable and other operating segments | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  | 0 |  |
Large Power Projects | Revisions in estimates for large power projects | All Other | Reportable and other operating segments | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  | $ (6,000,000.0) | $ (17,500,000) |  |  |  |  | (23,400,000) | $ (13,500,000) | (23,500,000) | (2,700,000) | (36,900,000)
Income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | $ (29,900,000) | $ (22,900,000) | $ (23,500,000) | $ (4,700,000) | $ (52,800,000)

X
- Definition Represents the number of countries in which the entity sells its products and services. + References No definition available. + Details
Name: | spxc_NumberOfCountriesInWhichEntitySellsItsProductsAndServices
Namespace Prefix: | spxc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of expenses at the corporate level which are not otherwise separately disclosed and are not allocated to the reportable segments or other operating segments for reporting purposes. + References No definition available. + Details
Name: | spxc_OperatingExpense
Namespace Prefix: | spxc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds from Contract Termination + References No definition available. + Details
Name: | spxc_ProceedsfromContractTermination
Namespace Prefix: | spxc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount charged against earnings in the period for incurred and estimated costs associated with an exit from business activities or restructuring pursuant to a duly authorized plan, excluding asset retirement obligations. Such costs include charges associated with employee terminations, lease terminations, asset impairments, etc. + References No definition available. + Details
Name: | spxc_SpecialCharges
Namespace Prefix: | spxc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AssetsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AssetsNoncurrentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DepreciationAndAmortizationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
Name: | us-gaap_DepreciationDepletionAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
Name: | us-gaap_GainLossOnContractTermination
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684 + Details
Name: | us-gaap_GainLossOnSaleOfBusiness
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 + Details
Name: | us-gaap_NoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The number of countries in which the entity operates as of balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfCountriesInWhichEntityOperates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OperatingIncomeLossAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expense classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4,6) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.7) -URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263 + Details
Name: | us-gaap_OtherExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireProductiveAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_PaymentsToAcquireProductiveAssetsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost (reversal of cost) for pension and other postretirement benefits. + References No definition available. + Details
Name: | us-gaap_PensionAndOtherPostretirementBenefitExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
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_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

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

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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